I would say it is worth it only if the following conditions hold;
1. You are really serious about beating the 215s, i.e., you wanna become a SNG pro and make a living on that.
2. you play relatively poor right now or a total novice which means the room for improvement is big
3.the guy who will coach you is truly a top-notch player who has played at least 3000-4000 215s and had a solid track record and he is willing to teach you everything he knows about this game. he also has to be a top-notch coach

but still, i would not be comfortable to charge my friend or relative that kind of hefty tuition