Cheap

1. Low and/or reduced in price.
2. Of poor quality.
3. Of little worth.
4. (slang, of an action or tactic in a game of skill) Underhand or unfair.
5. (informal, chiefly derogatory) Stingy; mean; excessively frugal.
6. Insurance is expensive, but don't be so cheap that you risk losing your home because of a fire.
7. (finance) Trading at a price level which is low relative to historical trends, a similar asset, or (for derivatives) a theoretical value.

(low/reduced in price): bargain, inexpensive, frugal, no-frills, priced-off

(of poor quality): flimsy

(low or reduced in price): dear, expensive, high-priced, pricey

(of low value): precious, valuable

(financial markets): rich