How to Avoid Super Fakes When Buying Designer Secondhand
Short answer: Counterfeits have gotten very good, but platforms that physically authenticate and some basic buyer knowledge go a long way. Not every platform is equal when it comes to authentication, and the gaps matter.
The counterfeit market has kept pace with luxury resale's growth, and the quality gap between a real piece and a convincing fake has closed significantly. A scan of counterfeit submissions across major verification services shows Louis Vuitton accounts for nearly 33% of all fakes caught, and Prada follows at around 14%.
The difference now is that fakes aren't just cheap knock-offs with bad stitching. The high-end replicas circulating today, often called "1:1s" or "super fakes," are built to pass a quick look. What they still can't do reliably is pass a close look.
How each platform handles authentication
| Platform | Authentication type | What it covers |
|---|---|---|
| The RealReal | In-house experts, pre-listing | Luxury RTW, handbags, jewelry, watches |
| Vestiaire Collective | AI + physical inspection | Auto on items over €1,000; opt-in (€15) for under |
| StockX | Third-party in-person verification | Sneakers, streetwear, select accessories |
| eBay Authenticity Guarantee | Third-party partners | Watches, handbags, sneakers, trading cards |
| Grailed | None | Peer-to-peer only |
| Depop | None | Peer-to-peer only |
| Poshmark | Posh Authenticate (request-based) | High-end handbags |
The RealReal inspects items before they go live. You're buying an already-vetted piece. The trade-off is that prices are firmer with less room to negotiate, and condition grading can sometimes be generous.
Vestiaire uses digital AI screening for all listings, then physical inspection at one of four regional centers for higher-value items. Their process is rigorous for pieces over €1,000. Below that threshold, you can opt in for €15. Worth it for anything you're not sure about.
StockX is your best option for sneakers and hype streetwear. They see enough volume that their teams know the right tells. For luxury handbags or ready-to-wear, they're not the right tool.
eBay's Authenticity Guarantee covers specific categories and uses third-party labs. The program has been quietly solid. Covered items ship to the verifier first, then to the buyer.
What to actually check when buying peer-to-peer
On platforms without authentication, you're doing this yourself. Here's what to ask sellers for:
- Hardware photos up close. Zipper pulls, clasps, and logo engravings are hard to replicate precisely. Fakes tend to have softer engravings, slightly off lettering, or hardware that feels light.
- Interior lining and pocket construction. This is where shortcuts show up. The stitching on the interior base and the pocket seams is harder to fake than the exterior.
- Date codes or serial numbers. Most major houses have documented formats. Louis Vuitton date codes encode where and when the piece was made, and the format changed in 2021. Ask for a photo and look it up.
- Care label details. Font spacing, the exact text format, and country-of-origin placement are precise on real pieces. They're usually the first thing counterfeiters get wrong.
- Dust bags and packaging. Not definitive on their own, but dust bags should have correct logo placement, quality fabric, and proper stitching. Counterfeit packaging tends to use thinner fabric with inconsistent embroidery.
Third-party verification services
If you're buying peer-to-peer and can't verify yourself, these services authenticate for a fee:
- Entrupy uses AI and physical inspection. Strong for handbags and accessories.
- Real Authentication covers a wider range of categories including shoes and apparel.
- Legit Check App offers online consultations for specific brands.
Fees run $15 to $30 depending on the item and turnaround speed. For anything above $300, it's worth it.
What to do if you get a fake
On platforms with buyer protection, report it immediately and document everything with photos before you do anything else. Vestiaire and The RealReal have return policies specifically for inauthentic items. eBay's Money Back Guarantee covers fakes. On peer-to-peer platforms, PayPal's Purchase Protection is your best path if the seller refuses a refund.
Don't ship the item back before you have written confirmation of the return from the seller or platform. Keep all packaging.
When you're comparing prices across platforms, it makes sense to weight results from sites that authenticate more heavily. Crawli searches across all major resale marketplaces at once, so you can see the full spread and make a call about where you actually want to buy.