market price vs market value

market price and market value both are nouns.

Word	Noun	Adjective	Verb	Adverb
market price	Yes	No	No	No
market value	Yes	No	No	No

As nouns, market price and market value are synonyms defined as:

market price and market value: the price at which buyers and sellers trade the item in an open marketplace

market price (noun)	market value (noun)
the price at which buyers and sellers trade the item in an open marketplace	the price at which buyers and sellers trade the item in an open marketplace