LRI offers the Proton for $69.95 and I thought that was the only place you could buy them but I see BrightGuy offers them for $59.50. Anybody see them listed elsewhere?
I haven't looked around for the Protons but MattK (batteryjunction.com) has been selling Photon Freedoms at half price. ($9.95) I bought four and it's the same 'retail pack' that everyone else is selling for much more.
I'd PM him about Protons and see what kind of price he can work up.