Pick up Melb drop off Syd @ Budget $33 per day + 2.5% cashback
Budget have a promo on until 14th March. Pick up from Melb Airport, City or Avalon airport and drop off in Sydney with min 3 days hire $33 per day. Bookings must be made by 14th March but can for be periods up to the end of March.
Add into this the $5 a day web discount booking, free entry into the win one of 5 32" LCD TV's and the 2.5% cashback you get when you login and click through from here and its not a bad deal. The hire includes unlimited km's.