I would say just hang out for a bit, watch the posts in the cargo hold and see what comes up.
A couple of weeks after I got on here, a great helmet showed up in there and I grabbed it. People are always selling stuff, so jsut keep your eyes open.
On the other hand, you definitely want to stay away from ebay, unless you know *exactly* what you're getting. Lots of people sell LOTS of junk on there!