I saw one of these go on 'buy it now' for about 2600 (but 3800 value). At that time, it had the same email contact, but Palo Alto as the location.
If it weren't for the switching location, check requirement, and fact that it's the same $$ amount again I'd think it more legit. A lot of times corporate travelers will cancel nonrefundable tickets and leave the credit unused up to the year expiration since the credit is generally held by their travel agent.
Generally, the credit is only valid for the original credit card used for purchase, unless you use the credit to buy something like a co.com gift account, which is transferable.
So, a less than scrupulous travel agent could have a bunch of these on a corporate account about to expire, and roll them into a gift account, esp. if the company has master billing.