I just don't get why everybody is crying about how economically disadvantegous it is to buy GHs at CEX.io and at the same time are people buying hardware at much higher price per GHs like Antminer U1 here https://bitcointalk.org/index.php?topic=386170.0 . Am I missing something?
Of course GHs price will go down with rising difficulty, but this has nothing with cex.