Every Christmas I get an "Entertainment" book from someone in my family. In this year's KC edition is a 2 for 1 for KCW. It's good for any seat to any regular season home game. The book is $25 now, $20 if you know where to look, and will be less later in certain places. Lots of other good stuff if you shop Price Chopper, enjoy restaurants - fast food or sit down, play golf, or enjoy the local arts.
These books are such a great deal. We've had several people we've brought to games use these as an easy incentive to get them to go when we didn't have spares from games we've missed.