Saw this in the Daily Telegraph (sorry only Twitter link works) and reminded me of this thread where winners were promised a $1000 shopping spree of toys but actual value of toys were 10-30% less.
In short to the 4WD story, the winner thought they were winning $150,000 worth of prizes but instead the value was more like $120,000. It went to tribunal and they found in the winners favour.
“Mr Lawler was induced to purchase his two-year magazine subscription partly on the representation made by the respondent in its Ultimate Escape promotions. Mr Lawler was entitled to hold reasonable expectations that if he was the winner of the promotion he would receive goods to the value of $150,000,” Mr Gibson said.
On appeal, 4WD Touring made the case that the winner suffered no losses, thus compensation is not warranted (not even the cost of the magazine).
It's an interesting case. So, yes, the winner probably shouldn't be looking a gift horse in the mouth fighting over $150,000 vs $120,000. However, a 2 year subscription cost $170. For arguments sake, let's say the prize is supposed to be worth $200 but you find you only get $100 of prizes, would they still claim no loss?
Similar example with this deal where you subscribe to a magazine for $199, and receive gifts worth $629.
Update:
Reminds me of that girl who thought she won a New Toyota