Just for the record, Canada Goose stuff isn't actually overpriced (much):
A Canada Goose Expedition Parka is right at $1000 including ruff. That coat is good for -30F- to -50F. That's actually a pretty good price. A Northern Outfitters Arctic Parka is going to run you $1200 or so. My parka from my dog mushing days was ~$1200 (in 1996) plus another $400 for the beaver and wolf ruff. Several of the Iditarod Mushers I know rock Canada Goose parkas. Screwing around outside in those temps requires pretty good gear, of which there aren't a whole ton of manufacturers and they cost good money.
Now do you need that gear to walk to your car in Chicago? No. But they probably didn't need the Range Rover they were walking to either. Chicago's roads are plowed.
I suspect that there are some jackets they sell with a higher temp rating that nudge more towards "overpriced", but for the most part they sell good, serious gear that is made in North America. That *expletive deleted*it ain't cheap.