I’d hold off before you jump. Judging by your user name, you are in NY? SkyFi through Dave Wasserman (ex-Stereo Exchange) buys high end, but there are all kinds of things you can do to try and recover some of your hearing. I’m really big on integrative medicine, which combines traditional western stuff with wacky Eastern snake oil. It has helped me through a few medical issues.
Are you LEO? Why were you close to a flash bang? Nasty stuff.