I assure you in addition to fully covering every possible pre-flop situation that comes up, the series also goes into detail postflop as to hand strength adjustments, when it's appropriate to stack off with certain hands vs. certain opponents, when to bet, check-fold, check-raise, check-shove, double barrel, triple barrel, etc...
In the information video, I promise that this is a fully comprehensive 40BB series, and that it will teach you everything that you ever wanted to know about 40BB play.
The review you quoted states that the series delivers on everything that is promised and that the reviewer was "quite satisfied." I took it as very positive feedback.
But regardless, yes, like with all of my products, I invite you to purchase the series and if you are unsatisfied with your purchase in any way, I'll happily give you a refund.