Messing About with CreateSpace

Well, I just started to look into using CreateSpace to make a hard copy of my book In the Name of Roma. The interface is dirt simple that even I could figure it out. The problem is the price. As a full color book with a glossy cover, the thing came out to a minimum price of $37.48 US. That is without any royalty for me. I need to fool around with the properties on it as I doubt that this would be useful to anyone else. I am sorely tempted to try to see if I can do this for some of my other scenario books even if it is to just print a copy for myself. For a hard copy of a scenario book, what do ya'll think is reasonable?