I've been talking to him on IRC, and I personally think it might be stolen.
Even if it's not, it's against Google's TOS to resell this, so it'll probably get deactivated.
Source:
http://www.google.com/glass/terms/; "Resale and Gifts" section:
You may not commercially resell any Device, but you may give the Device as a gift, unless otherwise set forth in the Device Specific Addendum. Recipients of gifts may need to open and maintain a Google Wallet account in order to receive support from Google. These Terms will also apply to any gift recipient.
EDIT: Also is abusing the OTC rating system because I pointed this out. Seems to get really touchy when called out. Condones breaking contracts:
12:03pm] starsoccer: your in some imaginary world where you think people follow tos all the time or they go to hell and get punished or something
Buyer Beware