I can't recall for certain if the Canada Goose was already marked down. But I do know Barbour and Moncler were marked down. As was a ton of EG, Ervell, APC type stuff. Got a Bedale for around $215 after discounts. In either case, if the CG weren't already marked down I'm pretty sure the 20% off would apply towards the $300 purchase.
If you can get to a Bloomingdale's check them out. In San Francisco they had an extra 20% off purchases $300+ with the Bloomingdale's card through 12/24...I think Canada Goose was already marked down 30% or something. I know Barbour was for sure.