Of three automobiles left on the lot, one was inexpensive, one was cheap, and one was economical.

Which word describes the automobile that represents a prudent purchase? inexpensive, cheap, economical. COuld you help? I don't get it.

Inexpensive implies that it doesn't cost much.

Cheap implies that not only doesn't it cost much, but it also isn't worth much.

Economical implies that it's a good value for the price.