I've still got 8-9 cases of 9mm that cost me 160.00 per 1K rds. It's unlikely I ever have to buy ammo again with the exception of 44mag.
If I didn't shoot anymore, it would be unlikely I would ever have to buy ammo again, too.
Similarly, I will never ever have to buy ski gear again. Or scuba gear. I'm "set for life" with scuba gear!
Alas... I went through over 6 cases of 9mm last year.
But I haven't skied for 30 years and haven't dived for 20 years. I think, for fun, I'll go on a scuba forum and tell them what I paid for my gear 30 years ago.