I don't know about your SATs, but here in Eastern EU I've been taking advanced math as school leaving exam and I had some money that allowed me to visit tutor l

I don't know about your SATs, but here in Eastern EU I've been taking advanced math as school leaving exam and I had some money that allowed me to visit tutor like thrice. I had problems with geometry and decided to get some help with one of its branches. Tutor explained me stuff, gave exercises that I did and so on. At the real exam there was one task from this geometry branch and I managed to do it. I don't know whether I'd be able to do it without going to those lessons, hard to say. But at the end of the day it gave me 5 of 50 points at this exam, so I basically in very simplified version I received 10% on hard exam for less than 10% of minimal wage. Of course it'd be naive to think that it scales like that, but you get the point.