Found the popular Canon 750d with 18-55 lens going for $621 at TGG (after $100 cashback). Should be able to price match at Harvey Norman to bring it down to $521 with the AMEX statement credit or $421 if you have 2 AMEX cards.
Credit to syba for the 1300D deal for $264 after price match, $50 cashback and AMEX statement credit.
http://ozb.me/o/19Zn?u=em
Credit to chuppa for the original AMEX deal. Looks like its still available for anyone who hasnt signed up yet.
http://ozb.me/o/196V?u=em
MOD: Price match itself is not a bargain.
If you look again, it says $721 before cashback. So it should be $621 after cashback, not $521.