I still have over 1000 of those lesser charms. I done every daily for a full month or two when MoP was released. Then I done all the dailies in 5.1 untill I hit exalted, and the same story goes for the dailies at the Isle of Thunder. Never dropped below 1000 since I went over that amount.
At the people saying it's "pay to win", no it's not. Can you farm those lesser charms in game with ease? Yes, if you have time. This is simply a way for people who want a chance at extra gear to have that extra chance, if they don't have much time. Instead of complaining "oh, it's pay to win, game going downhill", just do all the dailies in the game for like a week, and then you won't have to do dailies for another month or two. Yes, that store could potentially get closer to pay to win, but Blizzard aren't that silly, even though lots of people will think that.
If that store gets gear/profession mats on it, a lot of people will complain. As in most of the people that play the game. Then Blizzard will be 100% sure "Yeah, wrong move. Revert it". As long as it's vanity stuff/stuff that you get via dailies, this store won't concern me. If you're not gonna buy stuff that's on the Blizzard store, just don't complain about it and get on with your day.