Waylander, thank you!
As far as NPCs, I am doing color ones, about 4 per AOA Vol 2 and up. As far as a whole book, whew, that would take a while and would be expensive, too much so probably for most. So I am doing a little here and there. As a matter of fact, the next "Echoes of the Wyrd" will feature 2 free NPC tabletops from me in their February issue on GameWyrd's site.
Not sure what you mean
Do you mean page count, item count, or item card sizes?
Page count varies because of the size of the cards and the number of each card to a page.
Item count changes, because I can do that

someone mentions something they need before final production, and I throw it in! This accessory is about the need of the Players and the GM, I will provide what I can to let people know they do have a voice, and can have some input about the product they want to invest in.
Item card sizes are based on the geometrical space that an actual item needs.
*Small magic treasure doesn't require a huge index card, because they have little detail and are inherently simple in design.
*Weapons are mostly box shaped, or fit comfortably into a box shape given playing with a little perspective to make it interesting.
*Clothing varies. Things like Robes and cloaks are longer and need more height than width, if I used an index size for those, to get the full cloak in would waste a great deal of space on the left and right......so I am attempting to create them aesthetically pleasing as well. And the long ones (shown below) can be used as book markers
Thanks again and hope you continue to use Artifacts of the Arcane