Warm wool button down shirts????

Hey folks. I’m new to this high end outdoor gear stuff. I’m always freezing. Been to the doc. Everything normal. So I guess I have to start dressing warmer. I’ve been googling and I’m having a hard time finding affordable (~$100, preferably less) wool button downs. Please help steer me in the right direction.

Edit: I wasn’t clear. I was looking for other options besides filson, that are approved and recommended by you fine fellas in the know.