Well if we're not going by server specific, I find some of the better items that sell are Toughend Leather Gloves, Nimble Leather Gloves, and the Armor kits in the AH.
The gloves because of the rogues that'll scoop them up as well, kits because of the obvious. Also if you see anything, give them a free armor kit upgrade on the item. Adds a bonus to the buyer instead of someone that's selling just the item.
The Toughend LG's can be a bother to make because of the Spider Silk, and the potion you need on them (same with the Nimble LG), but damn if they don't sell well.
Hope this helps!