I have a customer that has a retaining wall that has blownout. She wants it to be redone the right way. She had someone else do it before. I have never redone a wall before. She has all the block still. So in this case, I just need to remove the remaining block and reconstruct the wall and will have some material cost in crush stone, sand, geogrid, and drainage pipe minus the block. The wall is 70 ft long by 2ft high. Most would not recommend geogrid, but there is a slope. Just curious on pricing, if i should charge more since they have the block already.