Thought those looking to fill holes in their dvd collection would want to know about this. Barnes and Noble is having a buy one get one free sale on their TV boxed sets.
http://video.barnesandnoble.com/boutique_cds2.asp?PID=14189&z=y&cds2Pid=1681&linkid=836486
They have a few, but not all of the DS sets included in the sale. As of right now the site shows these sets avaliable: 10, 18, 20, 21, 23, 24, 25,26
With the buy one get one free, and free shipping, in addition to the additional discount you get if you're in their club, my dvds cost about $27 per set. Only catch is no matter how many sets you buy only ONE comes free.
I got mine in three days or so, so delivery is pretty quick. Site doesnt say how long sale will be, just the normal disclaimer on "while quantities last".
Hope this helps people fill holes at a good price.