To spend the $300 Amex deal, I went to the HN Domayne Alexandria NSW shop, and got this oven for $278. (The online price is $288. http://www.harveynorman.com.au/breville-smart-oven-pro-conveā¦). Breville has $50 eftpos card give out for the purchase by 31/12/2016.
I also found they have Kenwood Blender for $29 (online $38)
Add up $307 - $50 eftpos card - $100 Amex credit back = $157 total for two of them.
Actually I also paid by mobile, so got the Amex $10 back for over $30 mobile phone payment (apple pay, samsung pay, android pay).
I believe the other HN shops could do the same or even better price.