Amazon has an interesting BD-related deal of the day going on. In celebration of the release of
Dexter: The Complete Fourth Season, today only you can get
Dexter: The Complete Seasons 1-3 for only $69.99 (60% off MSRP), or a little over $23 a season. This offer expires today at midnight PDT, or when stock runs out.
Update: this deal has expired now.