The point of the buy & sell area on a forum for enthusiasts is so these enthusiasts can sell each other the devices they're no longer as enthusiastic about as before. This is not a place for resellers to scoop up some phones for cheap and then immediately sell them for ten times the price to unwitting enthusiasts on a different site.

In any case, putting an advertisement on eBay for an object you don't even own is an offense that can and will get you permanently banned from using eBay. In fact, not just that, it's also simply illegal, because it makes you a con artist. Of course, that is to be expected from someone who enters a photo competition with a 'Linux iPhone'.