These words all describe a product or service that costs little money or less money than you expected.
cheapcosting little money or less money than you expected; charging low prices. 指花钱少、便宜、收费低廉Cheap can also be used in a disapproving way to suggest that something is of poor quality as well as low in price: a bottle of cheap perfume.
competitive(of prices, goods or services) as cheap as or cheaper than those offered by other companies; able to offer goods or services at competitive prices.指价格、产品或服务收费方面具有竞争力
budget[only before noun] (used especially in advertising) cheap because it offers only a basic level of service.(尤用于广告)指仅提供基本服务因而价格低廉
affordablecheap enough for most people to afford.指多数人买得起或负担得来的
reasonable(of prices) not too expensive.指价格不太高、公道的
inexpensive(rather formal) cheap. 指不昂贵Inexpensive is often used to mean that something is good value for its price. It is sometimes used instead of cheap, because cheap can suggest that something is of poor quality.