I have done one similar type tour (The Mass Bike Pike Tour), which was 4 days, camping, but the food was included. It was around 450.00 and the food was *horrible.* The worst were the breakfasts, which are the easiest to provide. One day, it was raining and there was no alternative but pbj and cold cereal. I am allergic to peanut butter and I dislike cereal, but ate it. That, with a Luna bar/Shot Blocks got me to a real restaurant, after doing the hardest climb I've ever done, without having to stop.
I would have gladly paid more for better food, since the $ went for bike advocacy in the state.