they also offer eth miner, look at their product pictures
it seems it has dvd rom and floppy drive also, good

Is this scam site?
Considering you can build two good rigs for the price they are asking and probably still have a good bit of change left in your wallet i would say not so much a scam as overpriced stuff for those who are easily blinded by numbers.
980w is about $850 dollars a year for electric at 10c a k/w, the two rigs you build would use less than that.