As someone who has been a bit of a critic of WotC recently, could I just step in and ask our community to give them a bit of a break here? When the new power structure (at-wills, encounters, dailys) came out, the idea of cards was a very popular one, and many people asked WotC to make the product. You may argue that 4E was designed with this in mind, but the idea of these cards is something that many EnWorlders have been talking about for months.
Yes, there are free versions of these cards, and if you want to put in the time, energy and money to print them out, more power to you! Our current group does not use cards, but there are several members who would benefit greatly from having them. And others who have said "great idea, where can I get 'em?"
But to criticize WotC for giving people so much of what they were asking for? It smacks of a "darned if you do, darned if you don't" mentality.
It's just my $.02, as someone who might likely buy one or two packs of these things period, and certainly won't get the whole set, but nonetheless thinks it's a great idea.
--Steve