When it's too good to be true, IT"S NOT TRUE!!!
This time might be a typo error but most of the time it is a gimmick by the megastore... A lot of time we are caught by the mega store on their ad such as "limited set offer per store" but when you reach the store as the first customer, they tell you excuse like "sorry this offer is not at this store" or even "sold out" when the ad only appears that very day...worst, some saleperson don't even know about their advertised offer because their marketing department just anyhow humptam whatever they think will attracts customer to go their shop.... I ever see customer quarrelling with the salesperson outside Cork Superstore early in the morning over such issue...
Trust their ad and rush for the offer...? Not for me.. I rather spend more time calling and check the cheapest normal price instead..