Here's an update of what I've gotten done today. This is how your offers will appear on screen when you check on your items from the mall (gold boxes = offers). You'll also get a notification displayed on screen when an offer is made online or offline (next login).
If you see a box that appears gold, simply click it and you'll be able to view all available offers.
There's still plenty left to do though.
- Accepting an offer (owner)
- Cancel an offer (player)
- Returning players their items back (Owner removes item; cancels, etc)