well, the people who brought it to my attention said they couldn't remember either, but thought that it cost like $20-$30 bucks which imo wouldn't have been too bad in say 2001 or so considering it had to be made from doners. I was hoping you might know since I would think someone would ask your permission before actually making a run of carts as oppose to a personal copy. they also say they thought 20 or 30 were made.
I'm just trying to make a list of semi-commercially release Homebrews, and this was a cart I didn't know about till it got brought up.
Judging from feedback, there's probably some interest in a run of this cart again, if you'd allow it.
Homebrew list link
here's my work in progress