That math is fine as far as it goes, though I'd actually suggest that it's pretty optimistic to say you could go from start to finish on 1000 rounds in 2 hours. The question I'm asking, though, is *would* you have spent that two hours writing, proofing, and submitting an article, or would it have been time spent sitting on the couch reading P-F on your phone or doing some other thing that doesn't actually generate income? Unless you'd actually be taking time away from income-generating activities to do the reloading, then reloading wouldn't be stopping you from earning money.
If you'd rather pay $0.33/round so that you have that two hours to spend doing something something fun with your family, that's a 100% valid choice, but it doesn't mean that reloading wouldn't save you money - it means that you personally value your free time more than the money you'd save.