I recently made my first shop and I noticed two things, you can view literally every single item in the game (including ones your not supposed to see and ones you can't get) and you can't remove a trade after you put it on. So you should add the option to remove previously proposed trades and remove some things that you can trade. I also found a small bug, when I chop down trees, it only turns into logs when it isn't mostly standing but it still takes calories.
~ i'm sorry this is in the german thread but it wouldn't let me post in the english thread. Also this was on Eco 0.3 just in case it gets fixed before you reply