I recently had an arborist come out to check our trees for pruning. It has turned into needing root collar excavation, and a much pricier job than we were expecting. I have called another arborist for a 2nd opinion, but he has rescheduled a couple times. Meanwhile, the other guy is asking us for updates and if we want to do the work. I hate the leave him waiting, but I also know nothing about trees. After researching some, I do agree that we have girlding roots, but don't know what a reasonable cost is to fix the issue. I don't know of any neighbors that have had this done to compare our estimate to. What would all say we can expect to pay for root collar excavation? Or is it even possible to give an estimate without seeing the tree? The tress are about 7 inches in diameter.