A Market Whore is someone who uses their talent, popular name or status to contrive gimmicks or schemes for money reasons, rather than focus more on the talent for integrity reasons.
"
Justin Bieber and Lady Gaga. Yet two more Hollywood and New York market whores to make money off of all the kids."
"That Gene Simmons from Kiss really is a market whore. He always comes up with some new type of
merchandising gimmick to sell. I mean really.. Kiss toilet paper too?"
"Looks like Madonna has yet another scandalous
fashion statement and more contrived fancy footwork with a 50 foot TV screen at her shows. Wow, what a market whore. Is she really even a musician?"