expensiveness

kalleus The state of being expensive; entailing great expense.
1743, (w), An Earnest Appeal to Men of Reason and Religion, London: G. Whitfield, 1796, A Farther Appeal to Men of Reason and Religion, Part II, III.1, p. 212, https://books.google.ca/books?id=A6FgAAAAcAAJ&printsec=frontcoverv=onepage&q&f=false

Surely you cannot be ignorant, that the sinfulness of fine apparel lies chiefly in the expensiveness. In that it is robbing God and the Poor; it is defrauding the fatherless and the widow; it is wasting the food of the hungry, and with-holding his raiment from the naked, to consume it on our own lusts.

Enchanting dining-rooms and tables have been achieved with an outlay amounting to comparatively nothing. ¶ There is a dining-room in a certain small New York house that is quite as inviting as it is lacking in expensiveness.