Those would be the ITT images and the "mother and child." The seller is Stefan Gommerman, also known as Steve Dorog. Steve and Eva (his late wife) ran an interesting gallery for many years on Rodeo Drive in Beverly Hills. They were both a pair of characters, but Steve was a bit of an odd duck, even among the most colorful of people.
The story of the Gommermans and the ITT images is a long one, and it is covered in a couple of reported court cases. One of these cases said that the originals were lost, and I would not be surprised if the originals Steve is offering turned out to be prints. The prices keep going up and up, just above what a willing buyer would pay.
Steve may believe that telling the world that he has originals gives him status. He did describe a print of Steve Leal's "Adam" as the original painting. Steve Leal, who has posted on this forum, corrected him, and the "painting" of Adam has not appeared on eBay since then. This one story leads me to believe that if someone were to actually bid on one of the Nagel paintings, Steve (Dorog) might very well come up with a story as to why the painting is not available, but limited edition prints are. In any event, he is not pricing them to sell.
If anyone does purchase one of the the ITT images or the "mother and child," have it checked by a reputable dealer who is knowledgeable in Nagel before money exchanges hands.
PS -- Lindy, to answer your original question, it could have gone as higher, but how much higher I do not know. Perhaps $1-2,000 more. Not a lot, but not chump change either.