One hour min at $200 seems steep for most small gardens. Heck, it may be a couple passes and 15 minutes of work. I’d probably look into the minimum being a stopping fee, to load, travel unload etc… and that minimum also cover say the first 30 minutes. Then have an hourly fee above that. This way a single pass garden is worth your time, but there is also enough value in it for the customer. I have a tiller and tractor mainly to till 1-2 acres annually, several times… when I was quoted the cost to till it, it was about $200/hr. So that’s fair… but making $200 the minimum won’t be a value to most simple gardeners. And, then maybe it’s also not worth your time to travel there.