Update: 18th May Although you can no longer get this deal for the $80 you can still get it at the discounted price of $99.99 instead of the normal price of $180 .
Thanks to friscoleague for finding this.
Amazon are currently having a big sale on Season 1-3 DVD which can all be purchased for a total of $80 rather than the usual $180 amount.
You can purchase the 3 Season set Here.