The crossword solutions for the term 'not as costly' are 'LESS' and 'CHEAPER'. This phrase is used to describe something that is not as expensive as something else. It is often used to compare two items or services in terms of their cost. For example, one item may be said to be 'LESS costly' than another if it is LESS expensive. Similarly, something may be said to be 'CHEAPER' than something else if it is LESS expensive.