I tried Marketplace a few times but always gave up because the search filter was so bad. There was no way to force it to include a particular search term, e.g. searching for "rtx 3060" would return tons of posts without "3060" or even "rtx" anywhere in the title/body. The distance search was also useless, since no matter how I tried to restrict the search to around my city, it would just randomly return posts from cities hundreds of kilometers away.

Perhaps the bad search was by design to show you as many posts as possible? Either way, it's worse than reddit search, which is saying something...