Metro has put out a coupon for $5 off on irresitibile products. This is $5 off on a minimum purchase of $5. Taxes will of course be extra, but you can basically just pay the taxes if you can get your total to exactly $5 or close to it.
These coupons have a unique ID attached to them, so make sure to use the link to print your own copy.
The Fine Print
Only one coupon per transaction. Available while supplies last. Valid at any Metro location across Ontario. Coupon valid until December 14th, 2012.