I am doing some Random work for some people what are fair prices for:
1 Painting a small deck
2 Laying seed and fertilizing
3 Planting shrubs
4 digging up shrubs
5 mowing a small yard
6 replacing sprinkler heads
7 laying straw
8 putting up fences

When I was in college one summer I had a job cutting grass. I had asked him how he knew how much to charge and he told me think of how much you would charge to cut it with a push mower and then double it. I don't think that will help much but that is a start. Also how much is your time worth, the main thing is you don't want to work for to little money. Hope this helps.