You would probably know best.. I´ve never sent 3 pair oakleys within the US before. If not I can contact you when I arrive in LA and able to check shipping cost.
The black one has as shown in pictures some use marks on the frame and inside of the glasses. The blue one has one small scratch on of of the glasses but is not visible without knowing where it is. The grey one is used just 3-4 times and are almost perfect. There is one small "black" scratch(like a dot) on the upper part of the frame as shown in one of the pictures.