I'm running a test game atm to figure out exactly how the Savvier Seller mod works. My shops are currently zoned as a Hangout and I have a produce shop, a flower/plant shop, a bookshop, and a musical instrument store.
This is all just based on my experience so far, but the musical instruments are the most popular (and profitable), with the plants and flowers coming in second. The bookshop has some décor book items and I tried to sell skill books and children's books but the skill books will (and did) disappear when the lot clean-up routine runs at 3am. The children's books stay but won't be automatically restocked. The produce shop is the least popular shop on my lot.
It's a bit tricky with anything that you buy from the normal game registers or craft/grow/find/make yourself in-game. With the Savvier Seller mod you can sell those items (still haven't tried nectar or food), but if you want to have your sim stock the shop from things you buy/make you need to make sure that the craftables button on the displays are set to "enable restocking craftables" (you do this by clicking on each display). If you keep Enable restock craftables active you will need to click on the register and open inventory and place items for restocking there, or else the items will not get restocked through the restocking interaction (this included the children's books that my sim purchased at the bookstore). But you can drag items out of your inventory to replace them as an alternative, I think.
Anyway, I know none of this really addresses the fact that sims don't seem to buy very much produce or craftables. I don't know why. I think Ani's produce stand might work better for those kind of items but I haven't yet tested that item yet.
¢¾ Receptacle Refugee ¢¾ ~ Where are we going, and why am I in this handbasket!? ~
Laura's Legacy