A shop was a retail business.
There was a repair shop in the Citadel of the Time Lords on Gallifrey; among the items there were TARDISes. Two technicians, Andro and Fabian, were working there when the First Doctor, with his granddaughter, stole a faulty Type 40 TARDIS. (TV: The Name of the Doctor)
The Pyramid was a combination coffee shop and book shop in Little Caldwell, run by Admiral Isaac Summerfield II, that was a front for a "safe house" for aliens and the temporally-stranded. It was active beginning in the mid-1960s, and was still active in 1983. (PROSE: Return of the Living Dad)