This rule is taken into account in this rake comparison. Here a hand is raked once there is a 3-bet or a flop. The GGNetwork is the exception to this rule. Meaning: No rake is collected if the hand is over before a flop is dealt. On top of that virtually all operators have a no-flop-no-drop rule.
There are two parameters defining the rake: When playing cash games, a certain amount of money is taken from each pot for the operator.
Online Poker Rake Calculator and Comparison Chart
