The Übermarket was an alien supermarket that claimed to have "everything you'll ever need under one sky". The store had at least 2150 aisles, each with its own artificial gravity.
Products sold included, but were certainly not limited to, Asnaxi crisps, Invaderz Potatoheadz, impossible soufflé grills, and various kinds of tea.
When the Twelfth Doctor, Bill Potts, and Nardole came to the store to get a new relative dimensional stabiliser for the Vault, Bill helped a lost Pathicol child called Tyto find her parents. (COMIC: The Great Shopping Bill)
Romana had been to the Übermarket on two occassions: once for the refund and once for the sale. (COMIC: Time Lady of Means)