n. The state of being expensive; entailing great expense.
The Century Dictionary and Cyclopedia
n. The quality of being expensive, or of incurring or requiring great expenditures of money; costliness; extravagance: as, the expensiveness of war; expensiveness of one's tastes.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the quality of being high-priced
Word Usage
"Mary was used to the expensiveness of Mrs. O'Callahan, but here was a new kind of expensiveness, subtle and compelling, strangely unconscious."