I have a German-made coffee grinder that was between $200 - $300 retail (though I got it for significantly less on clearance. It grinds well, but within a short time of getting it the electronics burned out. I opened it up to find a bafflingly complex circuit board with relays, opto-isolators, transformer, microchips, fuses, timers, etc. etc. Mind you this board has only one function: to turn an AC motor on and off.
I noticed the motor is a brushed "universal" motor like you'd find in a vacuum cleaner; that is, old technology that can run on DC or AC and needs only two wires to run. This complex circuit board... wasn't even justified for being a motor controller, because there was nothing to control! I replaced the entire burnt out circuit board with a hefty 20A 120-240 VAC momentary switch from my parts bin.
Since then the grinder's been working perfectly for about 14 years. But if I hadn't been willing and able to do that repair I might have gone through 10 of them in the same time. Part of making a quality product is restraint: to NOT put something on it (like that circuit board) that is unnecessary.