that is assuming it goes up crazy amounts every 30 days and the btc doesn't go up
if you buy 1 block erupter at the price i said and it doesn't make back its cost in 365days i will cover the difference

if you would like to take me up on the offer we can make it formal and even put some cash in escrow if you want no loss to you

I'm not going to take you up on it. And i'm not going to talk you out of mining with the thing -- it's fun & cheaper than hookers & blow. You have my *sincere, sarcasm-free* best wishes.
Have fun & make some coin.