If you go to Niterider website they have a refurbish section, I bought a Lumina 1100 for $40! The only refurbish one they have left now is the Lumina 900 for $30, more will come in, but when is the big question.

The one thing about Niterider lights is that the light comes apart with screws, you can replace the battery yourself, or send it in, the last I checked it was $24 for NiteRider to do that, it could be more now with inflation, if they do it, they check the entire light out including the seals. Batteries in lights only last an average of 500 hours, unless it's a Lezyne, those last 250 hours, but the LEDs are good for at least 50,000 hours, so we're forced to throw away a perfectly good light because the battery won't hold a charge?! What a waste, not only to the landfill but also natural resources; so at least the NiteRider all you're going to throw-out is the battery and you can take those to recycle places.