I have added two more base materials so we can now enter items with up to 5 base materials. I also added another dropdown with shop location and price to the create/edit item screen.

The shop location and price will show up in the items details and the popup. Then, I'll add some more search options for shop location. The locations view will now show items that have been added that shop like this:

http://wlodb.com/locations/14

I will start going through and updating the rest of the shop locations and prices tomorrow.