Found 2 items, similar to costliness.
English → English (WordNet) Definition: costliness costliness n : the quality possessed by something with a great price or value [syn: dearness]
English → English (gcide) Definition: Costliness Costliness \Cost"li*ness\ (-l?-n?s), n. The quality of being costy; expensiveness; sumptuousness. [1913 Webster]