When I first started out in poker, I played low buy -in tournaments all the time. For a few years in fact, I don't know if there was a $ buy -in. Everything explained about Poker Tournament Buy In and Rebuy, it advice, effects basic strategy tips etc. A poker tournament is a tournament where players compete by playing poker. It can feature as few as two players playing Buy-ins and prizes · Playing format · Betting format · Variants of poker.