The Make-A-Wish foundation, while a very worthy cause, is simply marketing window dressing on this. A window dressing that appears to be working.

Of the two pets up for sale, only one of them applies to the charity. Of that one, it's only 50% of the proceeds. Additionally, it's only for a limited time. If the true intent of this was to assist a charity then it would be both pets and a larger percentage (if not 100%) of the money.

However, I'm sure Blizzard will be happy to know that their marketing ploy is working.