For Canadians, starting July 1st, online game sales are to be taxed. Plan your WH 3 preorders/DLC buying accordingly.
I had forgotten all about this and it snuck up on me. The price of all digital games that weren't taxed before goes up as much as 15% depending on province.
I hate encouraging pre-orders, but it is a decent discount with this in mind.
Edit: this might not apply to WH3 pre-orders as the game itself releases after July 1st, but still applies for the old DLCs currently on sale.