The task of purchasing, sorting or using jewerly seems to be hover over, wait and move on. Players miss items on venders because they get lazy, and players try to keep track of items and keep them sorted, but many times its a pain.
A Book, Expensive, perhaps craftable, or set-up like a Storage Key / BOD Book would allow items to be sorted, priced, and filtered so you could find what your looking for quickly.
Just a thought!
This Same idea could be applied to PS, where players could drop and price their scrolls into the book, and buyers could quickly see whats available, SKILL and Level along with price.
Again, Craftable perhaps? or set up as a Storage Key from the stone.