I'd pay that much if it was guaranteed to cure it forever (minus any new injury that could occur). Been having it since I was 24 with a massive ear infection, it's been hell some days.
However, I count myself massively lucky that it did slowly resolve over about 5 years, to the point where I’d now consider it nearly gone.
I know it’s easy to lose hope, and get really frustrated by it, but I hope you have good days coming to you. Good luck.