I actually wouldn't have minded a CGC 9.4 (yours or one on ComicLink) if I could have got it for around $1,600.00.
Regarding getting Doug down on the price, basically I paid a very high price for the first run of TTA's I bought from him, so it's kind of evening out (I had purchase another group from him about a month ago at fairly reasonable prices).
I think he has the Pacific Coast copies of these books, so they are duplicates and probably doesn't want money tied up in them. Also, it's not like I got them for a song and a dance (well actually I did play him a few songs I wrote, so maybe he made the deal so I would stop).
All that said, it does help that I can actually see the books in person and negotiate over dinner (much easier then bidding, getting a counter bid, bidding again, etc.)