Thanks for the input, everyone. I'll keep looking around locally for other options - hopefully something is around.
The situation is basically this: My father has had a little hardware store-type oxy/MAPP setup for ages, and has always been annoyed with how quickly the little tanks get used up. He'd be getting this for his own purposes, and so the smaller tanks are handy for him because they're not much less portable than the little guys, but they should last significantly longer. I'd be using it because it would give more punch than my little MAPP/air torch, and having something available to use for free is always nice. So I'll see if I can put in some suggestions, but at the end of the day it's not my money, and I should probably be glad to have access to something workable.