Thanks for posting this - I was about to order one from PBS - maybe they had some kinda deal with the Soundstage folks to let PBS sell 'em first - in the "package deal."
It wasn't until later that we realized you could buy the documentary only for $19.99, and get the LIB at Best Buy for $18 (and thereby saving $20 or so). I had a hard time w/ those folks - I ordered the 2-DVD set for Tommer and never received 'em- had to bug the crap out of 'em to send me another set, which they eventually did.