Well I bit the bullet on Black Friday buying the TV for $2682.60 (15% first order + 25% off loyalty voucher, https://www.ozbargain.com.au/node/814957) and i went to check my order and low and behold, the price on the TV has dropped further to $3884. Thus, if you use the 10% off on first order discount for the APP as well as the 25% off loyalty voucher from Samsung, the price should get to $2621.70.
Once again, I have been screwed by Samsung but i hope this helps someone.
Good luck to those seeking a 25% voucher. I didn't manage to get one last time even though I own a range of Samsung products.