Personally I like 4151 and think they deliver on service and top quality girls. Yes their prices have gone up in the pandemic but everyone's have. As for charging $700 or whatever per session, that's their personal choice and it's your choice if you want to pay that or not.
Personally I have not seen some of the girls due to their restrictions and that's fine cause it's their boundaries just like your preference on which SPs you see or not.