I won a scratcher once for 500 dollars lol not sure if that counts. Besides that the only other experience I have with online gambling is when I lost about 4 bitcoins on bitzino and won it back on Primedice.
scratch tickets counts as gambling of course, mine is 20$ only there,and i made around 0,58 BTC with sport gambling, bets, and sometimes dice games, tho i'm not very lucky on them, only good at sport bets