All 144 episodes from the first six seasons (20 disks)
Do note that it's Region 2 so will require a multi-region player (those of you who might not know about this stuff Aus is Region 4 but most players these days are capable of being made region free so just google your model and see what pops up)
Also if you signed up for the Macquarie offer I think there's no fee for international transactions on that card so can bypass the Amazon exchange rate and save a bit of coin.
CamelCamelCamel 
Keepa.
How is your dog doing btw champ. Hope all is well now.
Yep, almost made a full recovery! Thank you
Good stuff :)
Twenty disks!! What a pain in the proverbial. It would take a couple for hours to rip them into my library. (optical drives might not be around much longer).
Its only SD, and downloads are 2-4GB per season, so the whole lot could fit on a single-layer blu-ray, or a $5 thumb drive.
How about h264 one season per DVD as a compromise?
Yeah bit of a hassle but around 7 episodes per disk so not all bad I would say. Even the bluray version is around 18 disks.
Yeah I was surprised by how easy it was to make my DVD player region free, excellent deal btw