I was looking through the auctions in my region and there are a lot of electronic items for sale. It appears the US Govt. bought items to be reliable as most is quality brand stuff.
As you mention, descriptions are terse and the pictures are lacking. I would have really liked to know the drivability of that 21/2 ton 6x6 fire truck with 10000 miles. Wouldn't the wife have loved that parked in the drive, lol?