500-1k rounds is nothing. Most of us have usually 10-20k rounds. 500 rounds is what I burn through in a range day. Hell I’ve got probably 50k 22lr at this point alone. And that’s just for plinking. 9mm/308/x39/556/54r/20g/12g/45 combined that’s probably another 40k rounds.
Most of us buy in bulk, ammo isn’t cheap, so when deals come around you buy as much as you can afford.