It depends on the area and the PH. There are areas in the Niassa, Luangwa, Selous that are approaching 100% success. The most successful hunts are the least educated cats in safari areas but would depend on other factors as well such as if hunting at night is permitted, quantity of plains game, density of leopards, etc. The most difficult are highly educated cats in cattle areas. I’d rather spend $50k on one successful leopard hunt than $25k each on 4 unsuccessful leopard hunts. Low cost low success leopard hunts get expensive quick.
There is no leopard hunting in South Africa at the moment. The most accessible is private ranch hunting in Namibia. It’s private land so bait can be included or low cost but it’s also the lowest success. There are some PHs with high success rates though. Concession areas in other countries have higher success, but also more expensive bait and day rates. The government doesn’t care if it’s a trophy kudu or bait kudu, it’s included in same quota for same pricing. If there are a lot of impala or zebra on quota the outfitter may provide a lower bait trophy fee though.