I wonder if I can buy 60 with no psu's. at 30 usd each.
$26 for a plug pack, from China?
Maybe if it was from a top quality company, but lets face it, the rule of buying anything with a power supply from China is to bin it to avoid the explosion/fire.
Just annoys me that they did away with the USB Dongle design, asking buyers to take a punt on something costing £15-20 is easier than £80 (bare minimum) when you consider there are a ton of S1's kicking around on eBay going for less, no need for a pc, and with simple editing of a file, will give more gh/s for around the same amount of power usage (possibly).
Bring back the U1/2 form factor, and you'll have a deal.