Our microwave kept blowing the breaker even after repairs, so I (somehow) found a perfect used one on Craigslist and replaced it today.
Surprisingly easy to remove the old one and remount it, plus I saved several hundred dollars in appliance and installation costs.
The crazy part is, the microwaves I’ve used in China are good, 2 knobs, one for wattage, the other for time. There are good models, but why import them when you can import 10 types of cheap ones and brand half them as luxury?