She didn't pay for them, she was given the bottle by azature, as she was doing red carpet presenting for the emmys. apparently her n jlo are the only celebs to have had it up to now.
I agree that from the pics ive seen it doesn't look amazing, but again nail pics never do the nails justice.
Those interested azature do a cheaper version at $25 which has 1 carat of black diamond in them in comparison for the 267 carat that the $250,000 bottle does.