dollar store

Short definition from Wiktionary

Noun

1. 1
   A retail store selling inexpensive items, especially one in which all items have a price of one dollar.
2. 2
   A government-owned shop in Cuba that sold goods mainly to foreigners and solely in exchange for hard currency.
3. 3
   Synonym of pound-shop: used to denote that something is low-quality or an inferior copy.