Ill bite...
I pick up hulls and brass ( from the ground ) when possible. I don't own a 410, but I can routinely get $25 / 100 hulls ( or better ) for the ones I collect. I am not "making money," but I use the found money to buy parts and pieces I do want.
I may not be driving a Ferrari, but my wife bought an HJ-60 LandCruiser in Canada last year and on our Cannonball Run home from Montana to Virginia, we made 3-4 "gunstore" stops. I scored 7 boxes of Small rifle primers and listed them on Gunbroker. The sales more than paid for the flights and diesel to get the truck home. I haven't seen a primer in a store since, but I didn't need them then and I don't need them now and I sure don't feel guilty for making use of the market. But, all things in moderation... I dabble, and I enjoy it.