HCA: Hermit Crab Association

I'm a new (proud) crab owner/rescuer. On a vacation, my gf and I seen some hermit crabs at a gift shop. They were in a wire cage with a wooden floor. Knowing crabs need sand to dig, i felt terrible and rescued/adopted 3 crabs, hoping i can give them a better life. Well, roughly 100 bucks amd a week ...