Richard,
I used Ultimate Africa for our upcoming trip to South Africa.
They are located near Seattle Washington and are very well traveled in Africa and knowledgeable. I priced both SA & US companies and found Ultimate Africa's prices to be very competative.
Call their toll free number and ask for Ian, he will answer all your questions about the package you described.
They can set up any type of package you want..we booked our safari camps individually. FYI, the package that you described is most likely priced per person and the amount will vary depending on the camps and hotels that you use.
Africa is expensive no doubt..but I can hardly wait!
Happy Travels,
Brenda