Anyone know where to find real Oakleys cheaper than retail?

I want a new pair of Oakley's (mine are scratched after 5 years of abuse), and I was wondering if there is ay place to get them "cheap." I need polarized lenses, and my favorite styles are radar, flack jacket, and m frame/ m frame pro. I found some polarized flack jackets for $140, which is good, but I would rather have Radars. If you have any suggestions let me know. Oh, I will be using them for baseball btw.