Previously I played on this room, and noticed that there are always tournaments with prizes of $ 1000 in buy-in of $ 2.2 and only 200 people at most. Who regularly pays half of the prize money? Almost every tournament there is a plus to the prize money, how is that?

Late registrations, re-entries, and re-buys + add-on pay for most or all of the prize pool.

Rake covers the rest.

AMC? Id that really a poker site? I know they play movies, but...