Just like the past couple years, the Cubs are heavily discounting April and May bleacher tickets. By entering the code "WILDCATS" you'll get at least half off for what appears to be every April/May game aside from Opening Day and the Sox series. Even next Saturday's game against the WS Champion Giants is discounted... heavily. Normal cost is $35, but by entering the code, tickets become $14.50.
THIS is a dynamic pricing system that I can get behind.