4500VA Power converter = Heavy! = $

I was lucky enough to get about 500lbs of UPS and voltage converters from work today. Only cost me 1 hernia.. lol I couldn't understand why this unit weighed so much; I couldn't see any batteries. Then I popped the cover off. I checked ebay before dismantling. A few on there from 50-150 but only one had shown as sold. By the time I scrap it out and sell the 15A circuit breakers I will probably come in at around 50 without the wait or hassle. Unit weighed around 80lbs + Lots of goodies to scrap, sell and add to my bin of useful but unused parts.