Costco Sale: Coolaroo Shade Sail 13′ Triangle $16.79

*UPDATE* 4/20/16. No hassle pre-attached ropes makes this an easy breezy install. Costco has the Coolaroo Shade Sail 13′ Triangle on sale for $16.79 (after manufacturer’s instant rebate), now through May 1, 2016. That is $3 off Costco’s regular price of $19.79. While supplies last. Color selection includes mocha, pebble and maroon (which may vary by location). Features: • Blocks up to 90% of harmful UV rays • Up…