What Second-Hand Shopping Platforms Do
Second-hand shopping platforms are websites and apps where individuals buy and sell used items directly to each other. The platform acts as the middleman — it hosts the listings, handles the payment, and often provides some protection if something goes wrong. You create an account, browse what others are selling, make an offer or purchase at the listed price, and arrange pickup or shipping. The seller ships the item or you pick it up locally, depending on what the listing says.
These platforms differ from traditional resale stores because there is no staff checking inventory or setting prices. You are buying from another person, not a business. That means prices can be lower, selection is wider, but you also have less recourse if an item arrives damaged or doesn't match the description. Most platforms charge the seller a fee — usually a percentage of the sale price — and some charge the buyer a shipping or service fee as well.
Key Takeaways
- Major platforms include eBay, Facebook Marketplace, Poshmark (clothing), Mercari, and Depop, each with different fee structures and item categories.
- Always check seller ratings and read the full item description before buying, including condition, size, and what is actually included in the sale.
- Use the platform's built-in payment and messaging system rather than arranging payment outside the app, which leaves you unprotected if the transaction fails.
- For local pickups, meet in a public place during daylight, bring someone with you, and inspect the item before handing over money.
- When selling, take clear photos from multiple angles, describe damage or wear honestly, and ship promptly after payment clears.
The Major Platforms and What They're Used For
eBay is the oldest and largest general marketplace. It handles everything from vintage collectibles to electronics to furniture. Sellers set a fixed price or run an auction. eBay charges the seller a final value fee (usually around 12.9% plus a flat fee) and holds the payment for a few days before releasing it. Buyer protection is strong — if an item doesn't arrive or doesn't match the description, eBay will refund you.
Facebook Marketplace is built into Facebook and focuses on local sales. You browse listings in your area, message the seller through Facebook Messenger, and arrange pickup or delivery. There are no seller fees, which is why prices are often lower. The downside is minimal buyer protection — Facebook doesn't hold payment or may provide the transaction. You pay the seller directly, usually in cash at pickup.
Poshmark specializes in clothing, shoes, and accessories. Sellers list items with photos and descriptions. Poshmark takes 20% of sales over $15 (flat $2.95 on sales under $15). Shipping is handled through Poshmark's label system, and the platform holds payment until the buyer confirms receipt. It's popular for brand-name clothing and has a social element — you can follow sellers and comment on listings.
Mercari is a general marketplace app that handles clothing, electronics, home goods, and collectibles. The seller fee is 10%. Mercari provides a shipping label and holds payment until the buyer confirms the item arrived. The app is mobile-first and popular with younger sellers.
Depop is another clothing-focused app, similar to Poshmark but with a younger user base and more vintage/streetwear inventory. Depop takes 10% of the sale price. Like Poshmark, it combines buying and selling with a social feed.
How to Find What You're Looking For
Start by deciding which platform is most likely to have what you want. If you're looking for vintage clothing, Depop or Poshmark will have more selection than eBay. If you want furniture or large items, Facebook Marketplace is better because local pickup avoids shipping costs. For electronics or collectibles, eBay has the deepest inventory.
Use specific search terms. Instead of "jacket," search "leather jacket size medium" or "vintage denim jacket 1990s." Most platforms let you filter by price, condition, and location. Read the full description before clicking buy — note the item's condition (new, like new, gently used, worn), any damage or stains, the exact size or model number, and what's included. A photo of a tag or serial number is a good sign the seller is being honest.
Check the seller's rating and read recent reviews. On eBay, look for sellers with 98% or higher positive feedback. On Facebook Marketplace, read the comments on their listings. On Poshmark and Mercari, check the star rating and look at what buyers said. If a seller has multiple complaints about items not matching the description or arriving damaged, move on.
Protecting Yourself When You Buy
Always use the platform's payment system, not a wire transfer, gift card, or cash sent outside the app. If something goes wrong, the platform can only help if the money moved through their system. Never send payment before the seller ships, and never agree to ship to a different address than the one you provided during checkout.
For items shipped to you, take photos of the package when it arrives and before you open it. If it's damaged, photograph the damage and report it to the platform when ready. Most platforms give you a window (usually 3 to 7 days) to report a problem. If the item doesn't match the description — wrong size, different color, more wear than described — you can open a dispute. The platform will ask you to return the item, and you'll get your money back once they receive it.
For local pickups, meet in a public place like a parking lot or coffee shop during daylight hours. Bring someone with you. Inspect the item before handing over money — turn it on if it's electronics, check for stains or tears if it's clothing, test the zipper or buttons. If something is wrong, you can walk away. Once you hand over cash, the transaction is done and the platform can't help you.
How to Sell Your Items
Take clear photos in natural light from at least three angles. For clothing, show the front, back, and a close-up of any tags or damage. For electronics, photograph the item itself, the box if you have it, and any cables or accessories included. Avoid blurry or dark photos — they make buyers hesitant.
Write an honest description. List the brand, size or model number, condition, and any flaws. If there's a stain, say so. If a button is missing, say so. If it's never been worn, say that too. Buyers would rather know upfront than be surprised. Include what's in the box — does it come with the original packaging, cables, manual, or tags? The more specific you are, the fewer questions you'll get and the faster it will sell.
Price it fairly. Check what similar items are selling for on the same platform. If you price too high, it won't sell. If you price too low, you're leaving money on the table. Most platforms let you lower the price later if it doesn't sell in a week or two.
Ship promptly after payment clears. Use the platform's shipping label if available — it's usually cheaper than buying your own label, and the platform tracks the shipment. Pack the item well so it doesn't arrive damaged. Include a note thanking the buyer. Once the buyer confirms they received it, the platform releases your payment to your bank account, usually within a few business days.
Fees, Shipping, and Payment Timing
| Platform | Seller Fee | Shipping | Payment Timing |
|---|---|---|---|
| eBay | 12.9% + $0.30 | Seller arranges; buyer pays or included in price | Held for a few days after delivery |
| Facebook Marketplace | None | Local pickup or seller arranges | when ready (cash at pickup) |
| Poshmark | 20% (or $2.95 if under $15) | Poshmark label provided | Held until buyer confirms receipt |
| Mercari | 10% | Mercari label provided | Held until buyer confirms receipt |
| Depop | 10% | Seller arranges | Held until buyer confirms receipt |
When you sell, the platform takes its cut before you see the money. If you sell a $50 item on Poshmark, Poshmark takes $10 and you get $40. Shipping costs come out of your pocket unless you built them into the price. On platforms like Poshmark and Mercari that provide a shipping label, the cost is deducted from your payout automatically.
Payment reaches your bank account after the buyer confirms receipt, which usually takes 3 to 7 days after delivery. Some platforms hold payment longer if there are disputes. Set up direct deposit in your account settings so you don't have to wait for a check.
Red Flags and What to Avoid
Avoid sellers who ask you to pay outside the platform or who offer a discount if you do. This is how scams work — once you send money directly, there's no way to get it back. Avoid listings with no photos or only one photo. Avoid sellers with no ratings or many negative reviews mentioning items not as described.
Be cautious of prices that seem too good to be true. A brand-new designer handbag for $20 is probably counterfeit. Luxury items at steep discounts should raise questions — ask the seller why they're selling it so cheap and request additional photos of tags or serial numbers.
When selling, don't ship until payment has fully cleared. On some platforms, a buyer can claim they never received an item or that it arrived damaged, and the platform will refund them even after you've shipped. Wait for the platform to confirm the payment is final before you drop the package at the post office.
Frequently Asked Questions
What happens if an item arrives damaged or doesn't match the description?
Open a dispute through the platform within the timeframe they allow (usually 3 to 7 days). Provide photos of the damage or the item next to the description. The platform will ask you to return the item at the seller's expense. Once they receive it back, you get a full refund. If the seller refuses to accept the return, the platform will refund you anyway.
Can I return something I just changed my mind about?
It depends on the seller's policy. Most second-hand sellers don't accept returns for "buyer's remorse" — they're selling used items as-is. Before you buy, check if the listing says "returns accepted." If it doesn't, you're stuck with the purchase unless the item is damaged or misrepresented.
Is it safe to meet someone in person for a local pickup?
Yes, if you take basic precautions. Meet in a public place during daylight, bring someone with you, and inspect the item before paying. Tell someone where you're going and when you expect to be back. Trust your instincts — if something feels off, don't complete the transaction.
How do I know if a designer item is real?
Ask the seller for close-up photos of tags, logos, stitching, and serial numbers. Research what authentic versions of that item look like — check the brand's official website or a luxury resale site like Vestiaire Collective or The RealReal. If you're buying an expensive item and unsure, many platforms and independent services offer authentication for a fee.
What should I do if a seller stops responding after I buy?
Wait a few days — they may be busy. If more than a week passes and they haven't shipped, open a case with the platform. Most platforms require sellers to ship within a certain timeframe (usually 3 to 5 business days). If the seller doesn't respond and doesn't ship, the platform will refund you automatically.