My biggest question.  I like that you accept Bitcoins as a payment option, but your selling Litecoin miners.  Shouldn't you be accepting Litecoins as a purchasing option for your rigs.  And yeah, possibly a pic and spec sheets would be needed as well.  Your price for a computer with a 7970 is quite high, unless you have alot of good hardware inside.  But there are no details on what is inside.