Impossible to buy; that one cannot buy.(adjective)
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Use "unbuyable" in a sentence
"Just talked to L and I'm afraid I've got bad newshe says he still loves the book, but that he considers it "deeply unbuyable" right now, because of the threat against the airplane."
"Although pretty centers can be purchased all the way up from $1, here again the mistress's industrious fingers come into play, for there is a certain unbuyable satisfaction in working a little of one's very self into the table adornment, and really handsome centerpieces are quite expensive."
"I caught a glimpse of that newer America growing up about us -- an America gone back to the older, truer, unbuyable ideals of our fathers."