In fact down here in Quebec, the law doesn't at all permit such an error " in store or on internet "
http://www.torontosun.com/2015/02/10/price-error-on-sears-website-angers-quebecers
"So far, Sears has refused to change its position, saying that the mistake was made in good faith and was simply a misplaced comma.
"Sears has demonstrated good will by honouring numerous price errors," said Sears Canada vice-president communications Vincent Power. "However, this error was exceptional."
That stance is not shared by Quebec's Office of Consumer Protection.
"Our lawyers believe that the merchant must honour the posted price," said OCP communications director Charles Tanguay."
I've had similar issue with Archambault, worng picture for AT-At and Micro At-at .. and I've won 6 sets 129.99$ for 12.99$ since the picture wasn't the good one, just a few days after Sears error.