You send whatever you sell directly to the buyer, and Tradesy holds your money for up to three full weeks. The buyer then can steal your item or wear/damage your item and say they received it that way. Biggest scam ever. Then they return the counterfeit or the damaged item back to Tradesy and Tradesy sends it back to you. You're left with nothing, and they give the buyer a "credit" to do it to more people. It's the perfect scam.
Save yourself a headache and losing a lot more than you stand to gain and go to another site that handles the items directly so these scams can't happen. Even when you document that the buyer stole your item and replaced it to send it back with a fake, customer service refuses to acknowledge this. They need to have a lawsuit filed against them for fraud and theft.
Bottom Line: No, I would not recommend this to a friend