I used this mill for about 5 years, pretty much wore it out. Had a few problems along the way, the rollers skipping was definitely the most annoying. I'd tear the thing down, clean/lube it, get half way through a full hopper, and the rollers would slip. Dump out grain, put a handful in, wait for the rollers to catch, then fill up hopper and hope it didn't happen again. It got old fast.
Also, the particle board base doesn't hold up too well either. Good luck trying to get replacement parts from the source. Overall, I would say I got my money's worth out it, though. Hell, the thing paid for itself after a year or so, since it opened me up to buying grain by the sack.
Last year I spent $99 on the Cereal Killer and have been very happy with it.