flash sale

English

flash sale (countable and uncountable, plural flash sales)

(business) A sale of merchandise where the prices are greatly reduced, but lasting for only a short period of time.
- 2022 September 7, Philip Haigh, “Comment: More strikes and poor morale”, in RAIL, number 965, page 3:
  Northern is one operator that is moving to combat the perception of rising fares, as it runs its flash sale of one million tickets for £1. This runs until October 20, or while stocks last.