I expect it costs twice that to keep it powered, older microwaves are horrendously in effecent.
We sent £60 on one in Asda back before Xmas as the old one had started to peel internally, nothing special but it works and that what matters!
Yeah maybe. It's good though. All stainless and the plate revolves with magnets, so it's really easy to clean. No moving parts at all open to the user. Also, when I compare cooking times, it's like a 950-1000W on full power. It also defrosts things well.

I have this one, decent brand, at least 6-7 years old now and is like new. Quiet in operation, nicely weighted dials rather than buttons, overall seems a nice unit which i'd recommend. Also has a grill which is handy and serves as overflow from your main range/cooker if you have a busy house.