I have a very good customer who owns a lot of properties. He has a Walgreens that has a very tall retaining wall that over the years has shifted. The dirt it is supposed to hold now runs out of the crack. He just wants a quick & cheap fix for now. I figured we could just remove brick clean out where it has leaked and reset. Would this hold for awhile until earth shifts again (We have had 4 earthquakes in past year...Oklahoma). I told him I would go ahead and give him the high side of putting some fabric on other side and then filling in with gravel instead of dirt to help this problem in the future. Am I going about this the right way? I figure to remove 7 layers of rock and reset = $1500 give or take I figure to to above and bring in loads of rock = $3500 This is first job like this I have attempted and don't want to be on the low side and also don't want to be too high b/c he gives me a lot of business.