By selling them off at a flat rate you will have a much larger user base, which is good for the BTC economy.
just my 2 cents
I'd rather see him auction large lots of the usb miners - effectively wholesaling them to distributors. It would be beneficial in creating larger economies, keep the wholesale price competitive, and would enable people to retail them through whatever mechanism they felt best served retail buyers.
Edit: I'm thinking of large lots at the 100's of units level. 128 would be good as it would parallel 4 of the block erupter blades for chipcount while still enabling some level of wholesale volume.