Exellent points. Yes charging double is wrong. Here in Miami I haven's seen that that much. People are getting smarter and they see this charges are not correct. The best customers are intelligent customers, those can ussually tell when something is fishy. There are lots of resources for people to find good mechanics and how to protect yourself from that. I comend you for not letting the bad mechanics take advantage of you. Hopefully those will fade away and leave a better place for future generations to work on an eviroment where they can be respected and apreciated.
CMT of Miami.