What are your bids on a boulder wall? 70ft in length- two courses high,two rocks high. The rocks are 2' to 3' in size. There is a boulder wall that was build by the builder and this wall is going to be set in 5' from the existing boulder wall. No grass, its a new contruction home. All the rocks are there on site. Its a straight wall. What is your best guess to build this wall without seeing it in person?