They're not really that rare, you can order some colors at oakley.com, and I think there is a ton of other webshops that have them too.. On the question if they're worth it, you could buy look-a-like glasses for a lot less, but you don't get the optical quality of oakley. If you're not concerned with optics at all, and just want the looks I guess you should get some look-a-likes instead..