How to Safely Buy a Nvidia RTX 5090 Ti on Mercari (2026 Guide)

Stolen Stock Photo Listing: Be wary of listings that use generic images. Scammers often use high-quality stock photos to depict a product they don't actually possess. Always look for unique, unedited photos of the actual item, preferably with the seller's username visible. If the images look too perfect or are identical to other listings, it's a major red flag.

Empty Box Shipping Scam: This scam involves the seller shipping an empty box or a non-functional item to make it appear as delivered. They rely on the platform's delivery confirmation to claim the transaction is complete. Always check seller reviews thoroughly and consider recording the unboxing process to have proof of the item's condition upon arrival.

The 'Invalid Shipping' Delay: Scammers might intentionally provide incorrect shipping information or delay the shipping process to manipulate the delivery timeline. This can sometimes be used in conjunction with other scams, making it difficult to track the item and potentially causing Mercari to deem the transaction complete before you receive anything.

Item Swap Return Fraud: A scammer might receive the legitimate RTX 5090 Ti and then attempt to return a different, often faulty or counterfeit, item. Mercari's return policies can be exploited in these scenarios, especially if the seller doesn't thoroughly document the item's condition before shipping. Be cautious of sellers with a history of questionable returns.

Electronic Component Swap: Similar to item swap, this is more specific to electronics. A scammer might sell a GPU with lower-spec or counterfeit internal components, or even an empty PCB, making it appear functional until tested. Always research the specific model and its typical internal components if possible.

Fake Tracking 'Delivered' Bait: This scam involves the seller providing a tracking number for a shipment that is either fake or delivered to a different location. The platform may mark the item as delivered, leaving the buyer without recourse. Always verify tracking information through official carrier websites and be suspicious of vague or non-existent tracking updates.

The 3-Day Rating Trap: Mercari allows buyers a 72-hour window to rate their purchase after delivery. Scammers may rush buyers to rate the item quickly, sometimes with pressure tactics, so they can secure payment before the buyer has sufficient time to discover any issues or defects. Never feel pressured to rate an item before you've had adequate time to inspect it thoroughly.