K.S.
Well A., I think this is an excellent question. I can only answer by telling you what I would pay.
My husband and I work full time and we have a couple flower beds and a dozen pots scattered around our patio and a few hanging plants. This early and hot spring/summer is really taking a toll on our seedlings and flowers. I have to water them first thing after work. And it can take me quite a while.
If a neighbor girl were to offer to do this for us, say every Tuesday and Thursday, I would pay maybe $5-$10 for that per week
Good luck with your garden care service!!