bargain rate vs cheapness

bargain rate and cheapness both are nouns.

Word	Noun	Adjective	Verb	Adverb
bargain rate	Yes	No	No	No
cheapness	Yes	No	No	No

As nouns, bargain rate and cheapness are synonyms defined as:

Other synonyms of bargain rate include cut price, cut rate.

bargain rate (noun)	cheapness (noun)
a price below the standard price	a price below the standard price
	tastelessness by virtue of being cheap and vulgar