If you go during November, it works out to about 10k USD for 7 (7 days of game drives) days + all domestic flights and a hotel in NBO on arrival night. That is 2 days Amboseli + 5 days Mara. All in conservancies That is for a single person (so paying the single supplement).
As far as wildlife trips that focus on megafauna go, I think this is reasonably affordable. Yellowstone can be substantially cheaper, but its much harder to get a decent cheaper. Ive looked into tours that look for jaguars in Brazil. Definitely cheaper than conservancies in Kenya, but its extremely difficult to take a compelling image of a jaguar. I am sure there are other options that may offer a better opportunity per $$, but I haven't found them yet.
