Quote from tqk101:
at 200:1, $200 can get a 4 standard lot trade that is $40 a pip. say you trade on EUR/USD that has a 1 pip spread, you are out of the game if you are 4 pips down. You could apply a 200:1 account, but if you are using any kind of money management system, you shouldn't need more than 50:1 leavage
If you could get 4 lots of EURUSD with $200 margin, it would be about 3000:1 leverage. I think even Iinky would have trouble trading that.