(of prices) extremely low, or (of products) of low quality: Farmers bought up the land at bargain-basement prices.

One common usage of this idiom is to describe something that is being sold at a very low price. It can refer to actual physical items that are being sold in a bargain basement section of a store, or it can be used more figuratively to describe any product or service that is being offered at a discounted rate.

Sold at a low or reduced price; very inexpensive. The term comes from a section of a department store, usually at the ground or basement level, where inexpensive items or those at reduced prices are sold.