Update
The most significant factor in selling devices is pricing. Devices are extremely illiquid because the trading and transportation are great ways of wasting the precious hash-time. Therefore no one knows how they should be priced yet. We would like to do the price discovery with auction by small quantity. The total number used for discovering the price will be very small compared to the whole batch, and the slow deployment rate before the construction of the whole farm infrastructure of the rest and arriving devices provides another motivation.