The guy was saying 20-30k for a good year with lots of fights and all wins, much less on years with fewer fights and/or losses. Considering I can't afford insurance just for myself (I'm a cabbie so my income is highly variable, but at the moment it's averaging out to around 20k annual), if that's around accurate then it's plausible. We're not, of course, going to actually know unless we find out the specific numbers.
Do you remember when from? The only interview with him I found in a TR archives search didn't mention insurance at all.interview on "tapout radio"