No, you didn't pay money. But based on the terms of the contest, the pictures you submitted belong to Canon Singapore Pte Ltd and they can use these pictures in any way they want to without seeking your permission or making any payment to you. In addition, according to the terms, they can use your name, personal particulars and likeness (your image, if they have it - perhaps they took a shot of you when you collected your prize?) for advertising or publicity (in relation to the contest).
In essence, you have "paid" something - giving them the image you submitted (which means it doesn't belong to you anymore), allowing them to use your name and personal particulars in advertising etc.
I feel they should at least extend the regular warranty they do for all new local (non-grey) purchases. But that's just my take on this. Perhaps what they're doing is the norm with local competitions. I dunno.
Anyway, enjoy your cam.
I see..hmm..okie..I will try to call Canon one of these days to check out ba..
xiexie.