I have wagered less than 1BTC since i just gambling for fun only 
But, i still able to make small profit at safedice.com
But, i still able to make small profit at safedice.com
how much profit from 1 btc amount , how much you loss
i have place only 0.1 btc dor fun only
If you wagered 1 btc, unless you bet 1 btc to low or high, he probably made a profit of 0.05 - 0.10, if he really did win