I make a lot of scrapbooks and tend to always make more pages than the scrapbooks have (typically they have 10).  Page protector insert quality varies wildly and so does the price.  When they put the cheap 12 x 12 scrapbooks on sale at craft stores (or if you have the typical 40% off one item coupon), you can get the entire scrapbook with 10 inserts for the same price as this.  However, they're terrible quality and most rip along the seam as you try to insert your scrapbook pages.