I dropped by the store and had a look. The controller the previous poster is mentioning, is NOT the original Nintendo controller, but the Inter Works or whatever it's called that has turbo function and retails for $19.99. These can be found anywhere really and are actually not that bad. I received mine from Best Buy last night and was quite surprised at the quality.
Best Buy at Sherway did have a whack of Insignia NES Classic controllers also for $19.99. I opened one of the boxes to have a look and they are white coloured and say Insinia on them. YUK. In a few months, they will be on clearance for $1.99. No one is going to want these FUGLY things.
If Nintendo will be manufacturing more NES Classics as they stated a few days ago, one can only hope they produce enough controllers as well.