Many people I know love going to St. Louis on Tuesdays for half-price wings with the purchase of a drink (I used to be one of them too). For around $12 plus tax and tip (prices may have increased), you get a pound of wings, a side of fries, and a can of pop on Tuesdays after 6pm. The fries are AMAZING and the wings are decent sized and taste quite good. Unfortunately, the flavour selection is slim and I wouldn't say this is the best wings deal offered in the GTA.
The downside is that there is always a long wait time to be seated and then to be served at this location. It's one of the few locations that is located uptown, so it gets very busy during game nights and Tuesdays in general. If you're craving wings, save yourself the trouble and find another spot on Tuesdays - wings are probably just as good and the cost will be about the same too.