Hey. Even 5 years ago for a comfortable online game in MTT, 100 buy-ins were enough for a limit. A 100 buy-in bankroll that was supposedly impossible to lose (if you have good skills) is not enough at the moment. Someone is currently using 200-300 buy-ins in MTT, and someone 500. Im interested to know how many buy-ins you use in MTT, Sit and Go to play plus at a certain limit. Source.