Longman Dictionary of Contemporary English
bargain basement
noun
EXAMPLES FROM CORPUS
▪ Today oversupply has helped bring down London rents to bargain basement levels.
▪ Yet it isn't a stripped-out bargain basement model.
Wiktionary
bargain basement
n. 1 An area within a retail store, especially an area located below ground level, where the least costly merchandise can be found. 2 (context attributively often hyphenated English) inexpensive. 3 (context idiomatic attributively often hyphenated English) Of poor quality; of little or no value; low-end, shoddy.
Usage examples of "bargain basement".
And why the pebble-colored slacks with the elastic waist, in so synthetic a abric it had no weave at all, smooth as Formica-slacks that might have been bought in a bargain basement children's department.
Charles Griffen, who sold the farm through a Portland realtor for what Pritchett called 'a bargain basement price', could not be reached for comment.