Groupon - $10 off (no minimum purchase required)
There is a lot of stuff under $10 to look for (mostly junk), but for those living in York Region, there's a great deal on Popeye's Chicken in Aurora. With the $10 off, you can get a 10 piece box of dark meat for $5:
https://www.groupon.com/deals/popeyes-l ... -kitchen-8
Don't forget ebates which is another 6% off.