Revinn, the Halifax store definitely has the 15 palettes. I've bought multiple there.
Also, if you're a fan of depotting, they've never given me trouble about returning eyeshadow pots and whatnot without the metal pan (as I've read that some MAC locations are not so nice about). I've also never had any problems from them regarding doing a B2M to get a limited edition product (I got some Fafi and Mattene lipsticks that way). I know the Halifax MAC store pretty well... The employees laugh whenever they see me walk in, as most of them know me by face and/or name.