That's not different from all the hardware that bears the inscription "ENGINEERING SAMPLE - NOT FOR RESALE," other than the fact that they're promoted to a larg

That's not different from all the hardware that bears the inscription "ENGINEERING SAMPLE - NOT FOR RESALE," other than the fact that they're promoted to a larger public (read: not developers that have drawers full of obsolete engineering samples). Some of that hardware is not the same hardware than the retail version and is essentially obsolete as soon as the retail version comes out, due to a different BOM between the sample and retail version and the fact that the manufacturer does not want to support the prototype version with updates. It doesn't make any sense for Google to restrict the resale of the retail version, but at this point in time, Google Glass is not a product that is generally available. If they keep that restriction for the retail version, now that is news.