There’s lots of stuff at a dive shop under $100 that is of great quality and absolutely necessary.
My local shop has most of their masks under $100. I need a couple of Hydros. That will be $100 and I can’t get my tanks filled without it. I like the donation angle of giving to others that can’t afford fluff. My local dive shop had a drawing for a dive trip and all the money went to the local veterans hospital. I bought a ticket for $25 for the chance.:)