I say its too difficult to arrive at a real answer. There are so many variables.
Time of year, baits last longer when its cold vs hot and they rot.
Length of hunt, my shortest leopard hunt was 16 days and did not get one, bait bill was large. Zim early 2000's. Impala were $200, female kudu $300 and zebra $400. Those amounts are long gone.
Maybe outfitter has left over bait site or maintains bait sites, you arrive to an already feeding cat.
How vast, wild is area, locals disturbing area, baits, cats? Wild PG is more expensive than goats.
Are there other animals eating your baits, lions have consumed my bait, I had an elephant rip down and drag away 2 baits, had to replace, both issues were in Zim and never did get a cat on those hunts.
There are many more variables.
I say ask your PH for the answer, they will give you the max if all goes wrong and the min if all goes right. You can always have a big PG bag and then not worry. Shoot your PG animals and use as bait. I had 2 zebra, for rugs, but best baits, extra impalas for friends at home and extra pigs for tusks. Talk to the outfitter, my baits were free in Namibia, shot 42 animals in 18 days, 5 "bait" warthogs one afternoon, rabies kudu were also free, not consumed by humans but leopards liked them. In the end I shot a big male leopard after we found and sat on his natural kudu kill.
You must know when the PH says you need bait you must be able/willing to shoot them. Plan costs for the worst based on what outfit tells you are bait.
MB