Most likely you will have someone at your hotel selling taxi services. It really depends a lot on whether you want luxury or tourist class, how much you want to bargain, and where you want to go. It's been a year and change since I went, but I *think* it was about US$20 plus tip for about 6 or 7 hours going to Giza, Memphis, and Saqqara. That was in a normal car, nothing fancy. I am sure that if youre at a nice hotel that they will have a more professional driver, but you will also pay for it.