"You can _not_ buy thousands of rounds worth of any ammo other than .22 with a week's worth of minimum wage pay (if you know something that I don't, let me know where you're finding these deals)."

It's pretty close. Ammoseek shows 9mm starting at ~$0.30 per round, and most other popular pistol calibers starting at ~$0.40 to ~$0.45 per round. And it's easy to find better deals if you're checking the r/gundeals subreddit periodically. That puts 2000 rounds of 9mm at around the gross income weekly income for someone earning $15/hour.