I just bought NYX Carbon sports glasses. You can get an RX lens that snaps in place behind the colored lens. The website is http://www.nyxsportsglasses.com/
The prices are on the website. I like the glasses. The main advantage is that you only have to have one RX lens set. The only cons I can think of are that it is a little slower to change the lenses and the case is a little larger than some other brands.