I dislike Ben very much. But no one comes close to putting out the amount of free (YouTube & Social Media) or cheap (Books) content within practical shooting. His methods evolve with the sport. Yes he's mean and says bad words and many other things we can argue about... but the dude knows what he's doing and he makes shooters better VERY fast.
I would look into your local heat that offers classes (Local M or GM) first. They will be able to help you get to the next level. If you put in the work and are looking for more juice to squeeze as you get up to M and GM yourself, then take classes from people like Ben, JJ, & Eric Gruffel. No point in spending the big money until you are ready for that level of training.