Great questions - and I am of the belief that you should be weeding it so all they do is press. The trick - how do you charge enough and not loose the job. When I am in the delimma - I have an easy to weed flat rate and a hard to weed flat rate. I hope the hard to weed discourages them from wanting it and if they still want it then I know they really need it. I also discount regular customers who want to do their own weeding. Just not enough time nor do I want to pay someone just to do weeding. Although I do have folks who love weeding - I on the other hand - hate it. So for price - experience will tell you how long it should take and figure a rate of $15 an hour and that is gracious.