expired Westfield: Spend $120 or More and Receive a FREE $20 Gift Card - ONE DAY ONLY
Just took advantage of this offer, got my new Nexus S for $279 - winning.
This is a ONE DAY only offer. Notable stores that honour this offer are DSE and JB Hi-Fi.
e.g. $199 Soniq 32" TV for $179
$188 ipod Touch 8GB (room for bargaining) - $168
$159 3TB WD External HDD- $139
You can also try to give them old receipts as the employees don't know better.