You know this thinking is fundamentally flawed, right? "Anyone paying more than $10 a g/his is sure to lose money". Under-schooled message forum economists have been saying that for months now, but the truth is nobody knows the future value of BTC, which if trending upwards blows your entire theory out of the water. Buying in BTC is one thing, and mining versus trading carry opportunity costs as any decision does, but you put it in terms of dollar returns and it's entirely based on a future value unknown. The misinformation is so widespread here I know it's pointless to try to enlighten folks, but if BTC goes up in value a lot of people will find themselves wearing The Emporer's New Clothes, hope you like the fit.