Tim, the proccedure goes like this:
machine them
wash them
shine them
clean them
assemble for nickel
nickel
disassemble
assemble
Its a huge work. And you have to be very careful to not hurt them in every procedure.
The price of the GGTB is a chinese price and I brought it to market at this price just to replace the ego. Immortal, premium, reliable, beautiful, inexpensive, options for different look (metals and caps), options for volts and atomizers, telescopic battery, safety features like venting holes and locking button. My real cost for this is about the same as my selling price to my sellers so I dont earn anything from it buddy.