A new grocery IQ & coffeeshop De Dampkring found under Build Mode / Community Lots, costs 0. It's a rabbit hole. You need Pets or a later pack for the store to show in your game. The coffee shop is a diner in fact.
Grocery IQ and coffeeshop De Dampkring (MediaFire)
Strand book store and Crown spa
best - one convenience store
7 - Eleven convenience store