I bought my last single wide case from a retail store. They said after the they stopped dealing with Oakley the rep never came back and picked up the case or display items. It sat there for 7 years before I came along and asked about older Oakley products. Yesterday I stopped at another retail store and even though they don't' have x-metal anymore they had a bunch of x-metal stands and display items but they refused to sell anything to me. Just luck of the draw I guess.
Like GRF said (hours on the phone, beating the streets and putting the time in) I have had no luck with retail stores. EBay & Craigslist is where I've got mine...last case was an weekend trip and 12hours of driving!