Okay, I made huge improvements to the script. It stores under the item IDs and data values, so you should be able to type in a number of aliases (eg. “stonebrick”, “smooth brick”, “98”) and get what you expect (whereas before you had to give the specific shop alias). I also keep track of stock so that I can keep the list clear of all those empty shops or shops that don’t have enough stock to sell. That was a huge problem before, as shop owners often fail to keep up with demand. (like myself) I also improved the styling a bit and improved some underlying code. It should be a better feature all around.
However, this required me to clear the old cache and start fresh. That means you’ll want to click your signs again to add your shop to the cache. As the Final City market manager, I went through and clicked all those signs already.