[ajml]

It really depends on what exactly you are looking to do. The standard line of thought as stated above is 20 buyins for a given level. Most of the players here actually prefer a lot more than that I think anywhere from 30-50 buyins. However, if you are just looking to play for fun a few hours a week and its not going to effect your real life if you go broke and have to redeposit you could probably play a given level with 5-10 buyins