To be fair, if I had a time machine, and could go into the future to see it was still working in say, 15 years, I'd pay £800 for a microwave.
Iv had microwaves cost £100 and they have lasted 15 years. It all depends on how often you use it, some people use it once a week other people use it twice daily.
Personally we use the microwave very rarely , most food tastes horrible which get microwaved, it tastes like rubber .
We tend to use either the hobb or oven or both.