wow this sale went so much faster than amhash2 i wonder why same price pretty much same terms but amhash3 is just flying off the shelves at super fast rate its crazy BUT good 
I see two explanations: collapse of pbmining has finally opened some eyes to the fact that there are more important criteria than apparent profitability (ie scams usually arent profitable). And secondly, the 2, possibly 3 subsequent drops in difficulty.
That latter argument may be short lived though, if paycoin hashrate returns to the bitcoin network and next gen miners hit the network over the coming weeks or months.