Hi guys new to the forum. I have a pair of Oakley x metal xx sunglasses. I was hoping one of you guys might know if it is possible or not to get prescription lenses for them. If I can't I think I will have to sell them to fund the purchase of a pair of prescription oakleys many thanks for your help. If I do sell would it be worth getting them tuned and replacing the lenses. They are X MetalXX frameTi02 lens black iridium what do you think I could get for them?