One day's visit is $1100, plus additional costs:
For schools in PA, NY, NJ, DE, MD, and parts of WV, VA, OH, and CT:
add in the cost of a hotel.
For all other states:
add in the cost of airfare, hotel and car rental. I require at least two consecutive days booked for long-distance schools. These can be days booked by the same school, or by different schools within the same general area. Having more than one school book a day helps defray the travel cost per school, since the airfare and car rental expense can be shared. On a recent trip to Wisconsin, two schools were able to share the travel costs (airfare and car rental), which came out to only $250 per school.
If you'd like something for parents to attend, I also make available to schools the option of an evening program for parents and kids entitled How to Invent Stories With Your Kids, which gives families practical, entertaining ideas for creating stories in their own homes. The cost of the evening program is an additional $250. Some schools use Title 1 funds to pay for this.
I also have teacher in-services I can do. This cost is also $1100, which would include two 2-hour sessions.