I appreciate that information. I will look into GPA. There are also two 2.0 copies in active auction on ComicLink as we speak. I’m considering each of the three books, depending on the two auctions play out; particularly the one ending first, which shows very well in the slab. The other book on CL has white pages, but is munched a bit on the front cover. Yes, the $12,399 seems high, which is likely why it hasn’t moved. But the low number of low grade copies available and the recent inflation of Marvel silver age comics makes it confusing to assess. Not sure if Hulk 1 has appreciated according to the recent inflation as say XM1 and some others.