Based on buys like the BLF A6 and the Kronos X5/X6 , I’ve been under the impression that initially you could not even buy the light without the special code which you receive via PM. At some point, if all the lights haven’t been sold, the code will be posted in a thread so anyone can buy the remaining stock.
Kronos X5/X6:
BLF A6:
After the BLF group buy is complete, the company may offer the same/similar lights under a different label.
BLF A6 Astrolux S1
Kronos X5 Astrolux S3
Kronos X6 Astrolux S2