Trade (add only) Merchant in Keepers Monastery

Please stick a trade merchant in the Monastery.. The Keepers mechanic already takes me away from slaying monsters, but price checking everything, sticking worthy items in a dump tab, then re-checking when I get to hideout and adding them to the shop is a massive waist of time.

Would be great if I could just stick them in my shop in the Monastery (add only).. Will reduce API calls to trade site as well.

Understand that could be tricky, maybe some way of adding notes to items? other than a trade tab.. New stash tab idea??