You will most likely have an idea what your holiday may cost as you looked on the Internet for offered African safari tours and got an idea what the costs are or you have set a certain amount apart that you want to spend. Either way tell the safari operator what that budget is. That will safe you time and energy in finding the safari you like.
Often people think that mentioning the budget will make that a cheaper tour is made more expensive, because the budget is higher and the other party wants the money. Maybe that happens some times, but decent safari operators will use that information to create the safari that suits you best. It makes communication so much easier and avoids irritation and frustration on both sides. Make clear what you want, what budget is available and if this is realistic you will get it. Otherwise you will get explained what is realistic with that budget and why. Safe your nerves and time. Rather use your energy for an adventurous fantastic safari, made to suit you best. Happy wildlife safari traveling!