We had all the details worked out, the time window set and he was going to come to my town for the pickup. The morning of pickup he said he wanted a break on the price because his drive was long. Told him I could not do that but could add a low end optic to the deal if it helps. He then backed out of the deal saying the time window was an issue and the price was now an issue due to the drive distance. I told him that was fine, I would hold onto it and wait for someone else and then he started asking what we could do to make the deal as he needed the upper receiver for work. I guess he was perhaps bluffing and I called out on it? Anyway it was crappy to have all the terms set and then he backs out last minute as I missed out on other buyers.