How to Sell on eBay, Poshmark, and Facebook Marketplace

Somewhere in your home right now, probably within thirty feet of where you are sitting, there is a few hundred dollars pretending to be clutter. The exercise bike that became a coat rack. The smartphone in the junk drawer. The jacket with tags still on it. Americans are sitting on staggering amounts of resellable stuff, and the three biggest places to convert it back into money, eBay, Poshmark, and Facebook Marketplace, have never been easier to use. They have also never been easier to use badly. Price wrong, photograph lazily, ship carelessly, or pick the wrong platform for the item, and you will work hard to earn half of what the thing was worth.

This is the complete playbook: which platform wins for which items, the fee math in real dollars, how to research prices like a professional reseller, the photo and listing formula that sells, how to ship without losing money, the scams to sidestep, and what the IRS actually expects when the money arrives. By the end you will be able to take any object in your house and know, in about two minutes, where to sell it, for how much, and what you will actually keep.

Start with a selling sweep, not a listing

Before touching any app, walk your home with a box and one rule: if it has not been used in a year and would sell for $15 or more, it goes in the box. The $15 floor matters. Below that, fees, shipping materials, and your time eat the proceeds, and those items belong in a donation bag or a future garage sale pile instead. A typical first sweep of a family home produces 20 to 40 sellable items, and experienced declutter-sellers routinely report first-month hauls of $500 to $1,500 from things they had written off entirely.

While you sweep, sort into three piles by value and shippability. Small and valuable (electronics, brand-name clothes, collectibles, tools) will usually ship. Big and heavy (furniture, exercise equipment, appliances) will sell locally. Borderline items wait until you have momentum. Sell the easy winners first; nothing kills a reselling habit faster than starting with a hard item.

The three platforms, and what each one is actually for

The single biggest mistake new sellers make is treating these platforms as interchangeable. They have different buyers, different fees, different shipping models, and different scam profiles. Match the item to the platform and everything downstream gets easier.

eBay: the everything market with the deepest buyer pool

eBay remains the place where almost anything finds its buyer: electronics, parts, tools, collectibles, niche hobby gear, vintage items, and brand-name clothing. Its superpower is reach and its sold-listings history, which we will use for pricing research below. Final value fees for most categories run around 13 percent of the total sale including shipping, plus a small per-order fee, and payouts land in your bank within a couple of business days of delivery confirmation. eBay favors sellers who describe honestly and ship fast, and its buyer-protection system means returns and disputes are part of doing business, so describe flaws like the buyer is standing next to you.

Poshmark: clothing, shoes, and accessories with social gravity

Poshmark is a fashion marketplace first. Brand-name and boutique clothing, shoes, handbags, and accessories sell here at better prices than eBay in many cases, because buyers come specifically to shop closets. The fee structure is simple: a flat fee of a few dollars on small sales and 20 percent on sales of $15 or more. That 20 percent stings until you notice what it buys: the buyer pays shipping, Poshmark emails you a prepaid label, and you drop the box at the post office. No label math, no packaging calculators. For mid-range clothing, the simplicity is often worth the fee.

Facebook Marketplace: local, fast, and fee-free in cash

For anything big, heavy, fragile, or cheap, Facebook Marketplace is the answer. Local pickup sales cost you nothing in fees: a $40 cash sale is $40 in your pocket. Furniture, appliances, exercise equipment, kids gear, tools, and plants move fast here, often the same day. Marketplace also offers shipped sales with checkout, which take a selling fee of around 10 percent, useful for smaller items when a local buyer does not appear. The tradeoff for free is friction: no-shows, lowballers, and the occasional scammer, all manageable with the rules later in this guide.

The $40 test: what you actually keep

Fees are abstract until you run one item through all three platforms. Take a $40 item, a nice pair of branded sneakers, and watch what happens:

• Facebook Marketplace, local cash: buyer hands you $40. You keep $40.
• Facebook Marketplace, shipped: roughly 10 percent fee takes about $4, buyer pays the shipping. You keep about $36.
• Poshmark: 20 percent fee takes $8, buyer pays shipping on a prepaid label. You keep $32.
• eBay with free shipping: fees of about 13 percent plus the per-order charge take roughly $5.60, and your shipping label costs about $5.50. You keep about $29.

So why would anyone use eBay? Reach and price. That same pair of sneakers might fetch $55 on eBay because the one buyer searching for that exact model in that exact size lives three states away. The platform with the highest fee frequently produces the highest net, and the platform with no fee produces the fastest sale. The professional habit is simple: local-friendly items go to Marketplace first, fashion goes to Poshmark, and anything specific, searchable, or niche goes to eBay. Cross-list stubborn items after a week.

Price like a professional: the sold-listings method

Amateurs price by feeling. Professionals price by evidence, and the evidence is free. On eBay, search your item, then filter to sold items. You are now looking at actual prices real buyers actually paid, usually dozens of data points. Ignore the asking prices of active listings entirely; those are wishes, not data. Price at or slightly below the median sold price for your item's condition and it will move within days.

Three refinements make this nearly foolproof. First, match condition honestly: a sold listing in like-new condition tells you nothing about your scuffed copy. Second, check how fast things sold; if every sold listing took two months, the median price is a patient seller's price. Third, for local items on Marketplace, browse comparable local listings and undercut the cheapest credible one slightly, because local buyers sort by price and distance and rarely scroll far.

One pricing rule of thumb for negotiation-heavy platforms: on Facebook Marketplace, list about 10 to 15 percent above your true floor, because nearly every buyer opens with an offer. On eBay, price honestly and turn on the best-offer option instead.

For items with no good comparables, work backwards from replacement cost. A buyer choosing between your used bookshelf and the same one new is mostly buying a discount, and 40 to 60 percent of current retail is the zone where used items in good condition reliably move. Anything sentimental gets one extra rule: decide your floor before listing, not while a stranger is standing in your driveway making an offer.

Photos and listings that do the selling for you

Across all three platforms, listings with bright, complete photo sets sell dramatically faster than identical items shot in a dim corner. You do not need equipment; you need a system. Shoot in daylight near a window, against a plain background (a white sheet or a clean floor works). Take six to ten photos: the full item from the front, the back, the label or model number, close-ups of any flaw, and the item in context where helpful. Photographing the flaw is not optional; it is what prevents returns and disputes later.

Titles are search engines' food, so feed them. The formula is brand, item type, model or style name, size, color, and condition keyword: not cool vintage jacket but Patagonia Better Sweater Mens Large Navy Fleece Jacket EUC. In descriptions, lead with the three facts a buyer needs (measurements, condition, what is included), then disclose every flaw plainly. Honest listings get fewer messages and fewer returns, which is the entire game once you are selling at volume.

Shipping without losing your shirt

Shipping is where new eBay sellers donate their profit. The rules that prevent it:

• Weigh before you list. A cheap kitchen scale pays for itself in two listings. Guessing a pound low can erase your margin on an inexpensive item.
• Buy labels through the platform. eBay's discounted labels are meaningfully cheaper than walk-up post office prices. Poshmark sends you a prepaid label, and Marketplace checkout generates one.
• Recycle packaging shamelessly. Boxes from your own deliveries, paper stuffing, and reused bubble wrap are free. The only thing worth buying in bulk is poly mailers for clothing, which cost pennies each.
• Mind the size tiers. Carriers price by weight and dimensions. Clothing in a poly mailer often ships for several dollars less than the same item in an oversized box.
• Ship within one business day. Fast shipping drives seller ratings on every platform, and ratings drive search placement, which drives everything.

What to do when an item will not sell

Every seller accumulates stale listings, and there is a standard escalation ladder for them. At day seven with no real interest, check your price against fresh sold listings; markets move, and last month's median may be this month's wish. At day fourteen, refresh the listing entirely: new lead photo, sharper title, and on Marketplace, delete and relist so the algorithm treats it as new inventory. At day thirty, cut the price 15 to 20 percent or cross-list to a second platform if you have not already. Items that survive all of that get one final decision: bundle, donate, or hold for season.

Bundling is the underused move. Three slow $12 kids clothing items become one attractive $30 lot, and lots sell because they solve a buyer's whole problem at once. Seasonality is the other lever: ski jackets in July and patio sets in December are not failures, they are inventory waiting for their month. A small closet shelf of off-season winners, relisted at the right time, routinely outperforms panic-discounting them in the wrong one.

Send offers proactively wherever the platform allows it. eBay and Poshmark both let you send a private discount to everyone who liked or is watching an item, and those warm buyers convert at a far higher rate than strangers. A 10 percent nudge to a watcher costs you a dollar or two and frequently closes a sale the same evening. Stale inventory is not a character flaw; it is a prompt to run the ladder.

The scam field guide

Every marketplace attracts predators, and almost all of them run the same five plays. Once you can recognize them, they are easy to swat away.

• The overpayment or fake payment screenshot (Marketplace): a buyer sends a doctored payment confirmation or claims they paid extra and asks for a refund of the difference. Never refund anything based on a screenshot. Money is real when it is in your account, not in an image.
• The move-to-another-app gambit: anyone who wants to pay by gift card, wire, or an app you have never heard of, or who pushes the conversation off-platform immediately, is not a buyer. Local sales are cash or in-person tap-to-pay; shipped sales use platform checkout only.
• The shipping address switch: a buyer asks you to ship somewhere other than the address in the order. Doing so voids your seller protection. Ship only to the order address, every time.
• The not-as-described return swap (eBay): a rare but painful one where a buyer returns a different or stripped item. Your defense is documentation: photograph serial numbers and condition before shipping, and record yourself packing high-value electronics.
• The fake courier or verification-code text: nobody legitimate needs you to send a code that was texted to you, ever. That code is someone trying to take over your account.

For local meetups, the safety rules are short: meet in daylight at a busy public place, many police stations advertise safe-exchange zones, bring a friend for high-value sales, and let the deal die rather than bend a safety rule for a stranger's convenience. The Federal Trade Commission publishes ongoing guidance on marketplace and payment scams worth a periodic skim.

Taxes: the part everyone gets wrong in both directions

Two opposite mistakes are common. Some sellers panic at the sight of a 1099-K and assume the whole number is taxed. Others assume online selling is invisible income. Both are wrong, and the actual rule is friendlier than either fear.

Selling your own used stuff at a loss is not taxable income. If you bought a treadmill for $800 and sell it for $200, there is no profit and no income tax on the $200, though you also cannot deduct the loss on personal items. Since most decluttering sales happen below original cost, most casual sellers owe nothing on them. Keep a simple record of what big-ticket items originally cost in case you ever need to show it.

Selling for profit is taxable from the first dollar. Flipped thrift finds, items bought to resell, and anything sold above its cost basis generate taxable profit whether or not any form arrives. Platforms issue Form 1099-K once federal reporting thresholds are crossed, and Congress has moved those thresholds more than once in recent years, so never let the form's presence or absence make the decision. Regular profit-seeking selling is a business reported on Schedule C, where your fees, shipping costs, mileage to the post office, and cost of goods all become deductions. The IRS Gig Economy Tax Center and its 1099-K guidance cover both situations in plain language.

From declutter to flipping: scaling up on purpose

Around the time the original box empties, many sellers discover the second phase: buying things specifically to resell. Garage sales, estate sales, thrift stores, clearance aisles, and Marketplace itself are full of items priced by people who do not know the sold-listings method you now know. The discipline that makes flipping work is buying only what the data supports: before money leaves your hand, check sold prices, subtract fees and shipping, and buy only when the item costs less than a third of its realistic net sale price. That margin absorbs the surprises.

Start inside a niche you genuinely know, tools, sneakers, board games, baby gear, vintage glassware, whatever you can evaluate at a glance, because expertise is the actual edge in reselling. One focused niche at one weekly estate sale, run through the system in this article, is how most five-figure-a-year resellers started.

Give the proceeds a destination before they dissolve into the checking account. Sellers who route payouts straight into a high-yield savings account earmarked for a specific goal report the same thing delivery drivers and freelancers do: money with a name attached survives. Money without one evaporates.

Your first weekend, scripted

Here is the whole article as a weekend plan. Saturday morning: sweep the house with the $15 rule, sort the box, and pick the five easiest winners. Saturday afternoon: photograph all five by the window, run sold-listings research, and list two big items on Marketplace and three shippable ones on eBay or Poshmark. Sunday: answer messages, schedule pickups, and pack anything that sold with delivery confirmation and a one-day handling time. Most households finish that weekend a few listings deep with $100 to $300 already moving toward their bank account, and a system they can repeat every month. The clutter was always money. Now it knows it.