If you haven't touched the series or just like buying things really, really cheap, now would be the time to act. Here's to hoping future teasers follow Telltale's lead and lump some utility in with the titillation.
[Update: If that price still isn't low enough for you, Telltale's offering one of any episode from any series for free to those who complete this survey. Hop to it!]
[Thanks, Dao Jones]