That's where the no questions asked warranty comes into play. I would try to break it through non abuse before the 3 years is up. I agree the setup is far from ideal but I feel fairly confident it would not only suit his budget and needs, but would last longer than the 3 year warranty. Used engine drive welders are either near retail or completely overpriced for what they are - I've been looking for a long time. i'd give less confidence in the upkeep of a used unit around here (unless completely overpriced) than I would to a new unit with a 3 year hassle free warranty. BTW every single thing run in a house has been run off our HF 8750 watt units at one of our locations and nothing has broken thus far in a few years. I understand how much noise the signal must have but again everything from cheap/expensive TVs, computers, appliances, pumps, compressors, welders, power tools and chargers run everyday, air conditioners, microwaves, etc etc etc has run without issue. Time will tell if my plasma TV outlasts my old Zenith tube that ran for 17 years screen-on time according to the on screen timer. Just my .02 cents