Samsung 58" (147cm) Series 6 Full HD Plasma TV - PS58C6500

Trying to get a good price on this model (don't need/want the series 7 with 3D).
Cheapest place to buy + Delivery to SA + extend warranty to 5 years was Bing Lee at $2297, unfortunately I hesitated and now it is now longer available.
Next was Game on AV $2368. http://shop.gameon.net.au/p/1140449/samsung-58-127cm-plasma-… (paying direct debit)
Surely there has to be a cheaper price somewhere?
Also, do you have to buy the extended warranty when you buy the TV? can you wait say 10-11 months?
Also can you buy the warranty cheaper elsewhere?