if you all use ur brain abit then u'll realise there will only
be that number of the 'key' stamps printed.
For any one of the colours, there will be one particular stamp
that will only be printed in amount same as the number of
prizes.
If anyone gets them, do you think they'll sell? If they are
collecters, they'd know its a rare piece. If they are not
collecters, they'd probably throw it away.
One other thing. Do you realise you can actually peek from the
top of the sticker to see what stamp is in there? So, if I were a
Mac manager, i could have probably bring a stack home and filter
them before giving out to my customers the next day.