Thank you, Ben.
Each card takes me between 2-3 hours on average (some more--some less). Re-makes take me about an hour for an 8-card sheet-- assuming everything goes well.
Recently, I did a '56 Mantle for our set. It took almost 14 hours. So, at minimum wage, I'm lucky to break even. BUT, I can sell it 7 times over the next 3 years, so it works out. The commons that sell for 10-15 bucks are strictly for enjoyment. I lose my ass on those, Lol. In fact, I get some resistance from my family on making those. They don't get why I wouldn't just make a bunch of Babe Ruths!
I list about 3 Ruth cards per year. If you make 'em easy to get--why would anyone want 'em? I print what I print, then move on. So far, I have NEVER gone back and "made more" of a card. I'm a collector and very particular about that. Not to mention I use different printers and settings for each set. That would be a nightmare to re-do each card individually