Spock/Appendices/Background information/Season 2 salary issue

In the spring of , before production began on Star Treks second season, Leonard Nimoy and his agent got into an argument with the producers regarding the actor's salary (Nimoy felt it unfair that series star William Shatner was paid US$5,000 per episode, while he was only paid US$1,250). The agent wanted US$3000 per episode for his client, and would settle with US$2,500. However, a misunderstanding resulted in the agent believing that Mission: Impossible stars had at least US$11,000 salaries, so he suddenly demanded US$9,000 for Nimoy. The studio, of course, refused. Nimoy threatened to leave the series if the dispute was not solved.
In response to Nimoy's threats, Desilu executive Herb Solow asked Casting Director Joseph D'Agosta to compile a list of possible "Vulcan replacements", in case negotiations went unresolved. Three lists were made of actors who were deemed suitable for the role of Spock:
"A" List: Mark Lenard, William Smithers, Liam Sullivan, , , , , , , Peter Mark Richman, , , Stewart Moss, , , 
"B" List: , Perry Lopez, , Alan Bergmann, , Blaisdel Makee, , Henry Darrow, , , , 
"C" List: Lawrence Montaigne, , Patrick Horgan, , Bruce Watson, , , Joseph Ruskin, , Lee Bergere, 
In reality, these lists were only a psychological ploy to put pressure on Leonard Nimoy and his agent. The only two actors considered as possible replacements were Mark Lenard and Lawrence Montaigne (ironically, both of them appeared as Vulcans in the second season, Lenard playing Spock's father, Sarek).
Eventually, Desilu (at the insistence of NBC) and Nimoy settled with US$2,500 per episode, plus US$100 for additional expenses, a better billing, a better merchandising deal, and more script input. However, when Montaigne was cast as Stonn in , his contract had an option of recalling him to be cast as Spock, "just in case." (Inside Star Trek: The Real Story, pp. 317-324)