Already happening... wanna bet on it? escrow?
500 BTC ok and Theymos as escrow?
Too high... 50 btc sure
Nah, that's not enough to be fun. We'll just have to see if you're right.
Ah, it's the old "I didn't really want to make the bet, so let me quote an outrageous number and hopefully the other guy can't afford it, then act like what he can afford is beneath me" tactic.