i have 6 lvl 10 refines and 2 lvl 9 charms, working on getting the other 3 to lvl 9 charms right now to have the full set.

i spent anywhere from 700-1200 adv refines to get from lvl 8 to lvl 10 refines

i spent about 650 and 800 charms to go from lvl 8 to 9 for charms

i don't see what your complaining about here, cause to me it looks like normal rng