You will never get your bitcoin back if you buy one of these at this price. It isn't even close. This is for suckers or those with stolen electricity.
It is all situation dependent but for most (including me) I could have made more money buying coin all year and then selling at $300 when it was in that range. However that would not be as fun, as supportive of the network, and I would have spent my money playing with some other idealistic electronic related idea so it may as well be the one which has hope to actually make a difference.
It isn't all about the money for a great number of the people posting here.
However, we still care about the money and the difficulty flatness over this year showed it is possible, but the power rate and uptime will determine such.
I agree the price is high, but the early adopters do get to start on ROI the soonest. So if you are going to roll the dice, roll them now. By the time people wait for the price to drop the difficulty is going to seriously pop.
Don't encourage people to buy this, it's just plain wrong.