If you want the real thing then you have to contact LRI- the folks who make Photons. Look around http://photonlight.com and you may find a phone number, or email Bryan- he will know. Expect to pay about 6 bucks each for one- but if you ask nicely they may even form the leads in the correct shape for you (which by yourself is not the easiest of tasks)- assuming it`s going in your Photon?
Otherwise, well I know a UK component supplier that has them but I don`t think they ship overseas, at least not cheaply. http://theledlight.com has the 15 degree type like Infinitys use- but the Photon uses the wider 30 degree one doesn`t it? Not sure they have those.
I`m sure some of the more well informed US-based LED buyers will be able to name better and cheaper places to get one.