As I've understood it, this page is like an eBay for JDM cars. This site states that your satisfaction is important to them, but the terms are written in a way that protects them from any responsibility. The scam protection systems are mostly there to help you in case you don't receive your vehicle at all.
Tradecarview is a great place to find sellers that sells used vehicles from Japan, but the buyer protection isn't very good. Before buying something, do a lot of research outside tradecarview to make sure it's a legit seller.