Back in 1993, when I switched from my trusty 9mm to a trusty 45 for the action matches, one of the guys gave me a large box of used 45 brass.
A guestimate would be around 2k of it, that's been loaded over and over and over....
Still using some of that batch, although it's been whittled down some over the years.
Probably left a lot of it in the weeds somewhere or other.
Never did have to spend any money adding to it - loads of range pickup where we shoot.
Hooray for those shooters who don't reload, especially the ones who pick up after themselves and put it in the range buckets.
Saves a lot of bending, squatting and duck walking, bless them.