DO NOT USE THEIR SHIPPING FEATURE! My item sold, I shipped it, and the seller accepted it. I gave them a 5-star review. After my review the seller filed a claim to return the item. When I reached out to OfferUp and told them the buyer failed to verify that the part they bought worked on their computer. I have proof of the buyer admitting that. OfferUp wouldn't listen to me or let me change my review. They claimed the seller had 'proof' but refused to share with me what that proof even was. SCAM!