For the 2 people who do not have all of the Amazing Adventure episodes - We get some sort of discount that Pogo does not actually say. But I enlarged the pic and see that it was only good until 3/10/14 ..... but this is Pogo we are talking about.
(https://i63.tinypic.com/2h34eg8.jpg)
I am so glad I have all the episodes. I would have missed this sale by over 18 months.