If 200$ is reasonable price point. We can ask what is the normal rate of people who repair lawnmowers? How many hours you can actually buy with it? 2? 4? and then we aren't even at parts. Are they available, what is the lead time?

Labour costs are likely so high now that just replacing something makes lot more sense. And you get certainty that it works.

Also shouldn't there be some sort of warranty? At least for year or two?