Thanks for the update Butan, I've been using the older STB and it still worked pretty well for what i used it for, but I like the new trading update (I use it for trade distance bonus, and sorting my inventory).
Two things I'd like to see (if possible) would be:
1) When you're in a fief, under the Weapons tab be able to only show +1, +2, +3 loomed items (similar to how you can sort your inventory on Info tab when in a fief to only show heirloomed items over a certain value). Or to have it only show items that have been discounted (and again, over a certain value). I'm assuming you'd still have to click on the inventory type, like two handed weapon, body armor, etc.
2) When you're not in a fief, be able to sort your inventory by item type, under the "Inventory" tab (this is more of a "hey that would be nice", but since you can already do this under the Info tab when you're in a fief, I'd say it's a very low priority).