Guess it was a one-day sale, as the price at the link is from a third-party seller. Amazon's price went back up to $98.99 for BD and something similar for DVD.
Somebody convince me to try and watch this again because the first episode put me to sleep. I found nothing about the characters interesting and it just dragged on and on with nothing but people talking about their problems. After that, I couldn't bring myself to stomach another.