This isn't a retail focused pack, so the retail doesn't work super well standalone until your store rating is higher. Before that they'll only buy if they're having a good experience at the store. The sales are meant to be more of a "memorabilia of the experience" sort of thing than outright just selling stuff. But if your store is 2+ stars I find Sims buy stuff all the time no problem. I've run several retail-only stores and Sims will gladly pop in and buy stuff- to the point where I made a mod to limit sales to one-per-customer since I was making way, way too much money off sims buying several pieces of jewelry in one visit.
