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I tried to search for it but I couldn't find anything under "rare cost" or "cost more" in the searches... So I'll ask... Why do rare wavelengths cost more? I mean I see these what seem to be a simple piece of copper and wire 473nm 20mw diode costs over 500$. How can that be? Is there some...

This is my first post but not my first time here. I bought a survival laser a long time ago from a guy on this forum. First actual post in over 2 years says the registration info heh Anyways, keeping in mind the title, what's the best place to get a laser like that. I love the look of the...