A way to sell items from inventory to a store or mod that has that feature?

I think they can. It seems like I had tried it once but now I'm second-guessing myself. I know one family I had them sale lemonade but it seems like I had a kid tend the table. Yeah, I'm going to have to double check that. I want to make sure I'm not mixing that up with TS3. It's really late so I'll test that out tomorrow. To be continued....?

I don't want to give misinformation.