I went to
APE this year too and pretty much felt the same as Toby: A lot of vendors are selling stuff that isn't comic books or graphic novels, such as arts & crafts, or artists who are selling their sketchbooks or prints or portfolio books. The last two years I found a lot of great graphic novels at APE - often webcomics vendors selling collections of their webcomics, but not always - but it seemed like the pickings were slimmer this year for new material that was telling stories.
The biggest vendors at APE are Slave Labor, Fantagraphics, Last Gasp and Top Shelf.
Yes, there are a few guys there selling back issues. One guy emphasizes the undergrounds, and the other ones carry graphic novels and some back issues from Vertigo and the non-superhero independents.
There are usually a few vendors selling art supplies or drawing reference materials.
Before I first went to APE in 2010, Ryan told me he hadn't been for a while because a lot of the same guys come each year selling the same stuff, and he wasn't getting much out of it anymore. After this year, I can see what he meant. I might skip it next year.