One trip to a craft store will open your eyes to the fact that you could spend a fortune on a single book, but there is no need to do so if you use all the stuff you get during your WDW trips.
I will give you a tip for anyone going in September and beyond, we went 2 years ago and got the special papers and the book for half off. They had alot of stickers off too. The paper was maybe $10 after discount and the book was $20 after discount. The other thing you can do to cut cost and not cut the look of expesive and get creative. I cut out a BIG Mickey (fits 12x12 page), and then collaged all of everything in Downtown Disney. When it is the first trip, you want to catch everything, and Downtown Disney has really cool stores. It cost me about 3 hours in time, but 2 pieces of card stock money wise, and the pictures I printed. The same with the Epcot World Showcase, I took all of the worlds, and miniaturized the pictures. Did a big circle to fit 12x12. Put a brad in the middle of the circle, and cut out a square to fit the pictures. The circle goes around and you see a picture of each country. Again, alot of time, little money. A brad, 2 pieces of cardstock, and the cost of printing the pictures and obviously the glue. People stop when the come to these 2 pages. The idea came when I had 50 pictures for DTD and I wanted to use all the pictures but not the space. Same with Epcot. I hope this helps anyone who wants special pages and not have the cost. The other place to get deals on Disney Scrapbook things is Ebay. I have gotten oodles of things, Disney and not, for cheap.