pricy vs costly

pricy and costly both are adjectives.

Word	Noun	Adjective	Verb	Adverb
pricy	No	Yes	No	No
costly	No	Yes	No	No

As adjectives, pricy and costly are synonyms defined as:

Other synonyms of pricy include dear, high-priced, pricey.

pricy (adjective)	costly (adjective)
having a high price	having a high price
	entailing great loss or sacrifice