Just recently, I took a 7-day Road Scholar tour to a place that I really wanted to see. It was worth every penny with all gratuities and all but a couple of meals included. Very busy and well run.
It may give you an idea of costs to travel near and far to explore the site and see what catches your eye. Some of the people on my tour had been on beyween 12-19 trips over the years due to the degree of satisfaction.
www.roadscholar.org/