It's not about the money, it about spreading joy, fun and laughter.
(sfx: crickets)
OK, it's about the money!
The short answer to your question (have I ever posted a short answer?) requires only one assumption, and it's a very safe one: that each of these celebs was working for scale (the minimum payment the union allows for the very specific type of job).
Step 1
The right contract and type of program:
Under AFTRA's "Network Code" (the applicable contract, as opposed to the Commercials, Phono or Non-Broadcast contracts to name just a few) game show pay rates are different from some other types of programs, such as dramatic shows.
Step 2
The correct rate:
The program in question is a 1 hour show (as opposed to 30 minutes or 2 hours, etc.), and each celeb falls under the category of "on-camera principal" performer. Other categories include "off-camera", "singer-solo", "singer-group", "dancer", "puppeteer", "extra", etc., etc.
Step 3
The stuff the agent is supposed to check up on:
Scheduled hours vs hours worked (possible overtime), wardrobe (bring your own and sometimes there's extra money), possible meal penalties (money if the taping runs long and a meal is skipped or late), what kind of booze is being served, and can the agent's girlfriend (or is it niece) sit on the announcer's lap ;-)
And you thought the only thing an Associate Producer and the network's business affairs people did was lunch!
So your MG/HS celebs all were paid the same, no matter how many times their square was picked or how funny they were ;-)
Randy
tvrandywest.com