I many jurasdictions, it can be successfully argued that a company does not have to honor pricing mistakes that no prudent person familiar with the product would consider to be reasonable. For example, if you see a car dealer where the letter fell off of a sign, and a 29,995.00 car read as 9.995.00, the dealer does not have to honor that price, as no normal person would reasonably expect a new car with a sticker of 29 thousand dollars to be selling for 9 thousand dollars.
What should be considered in this case is whether this would fall under any of those rules. To me, 99.00 is an almost reasonable price for a doorbuster type of sale.