Target takes up to 28% off select seats, canopies, and gazebos, with items starting at $29.99 plus about $6 for shipping. (Some items have free shipping.) A couple of best bets:
Party Sail Canopy from $29.99 + $6 s&h (pictured, low by $3)
Quik Shade Weekender W64 Instant Canopy for $69.99 + $26 s&h (low by $32)
From shoes to cookware, if you're willing to pay a little more for these awesome products, you may never have to shop for another again.