I have a customer that I have completed several projects for over the years. He called me the other day to see if I would be interested in removing the grass on a berm in the side yard and install plants and mulch. I am not sure what to charge for this, as far as tilling or grading the berm. Plants and mulch I can figure out. The berm is very large 187'x15' and is roughly 2-3 foot tall in some places. Anyone have pricing experience with something like this?