People can ask for any price , even 100/Gh , this doesn't mean it is actually seliling at that price.
But , you'll probably find far more customers suckers on ebay than on this forum.
Why does CEX.io have so many suckers? They're selling even higher than Ebay.
It's because of the suckers purse and location.
On this forum people who can afford a rig worth 1000$ are usually clever guys (take pre-order out of the picture) , all the new users , with 20 bucks in their account and hope for a ferrari go for cex.
On ebay , there is no such difference , they fall for anything.