“Star Trek IV: The Voyage Home” - release date: 26 November 1986
“Encounter at Farpoint” - original air date: 28 September 1987
“The Bonding” - the first episode of TNG Ronald D. Moore wrote, and sold as a spec script before getting hired as part of the writing staff, original air date: 23 October 1989

There is plenty of references to money in TOS, and not merely as a figure of speech.