@wffl If you don't get any better option, I've got this one : https://www.leonardo-carbone.com/witch-hat-agata-black
It doesn't really match your requirements, it's not a really high quality piece of clothing, but it's quite nice and comfortable (to begin with, it's actually made of wool) and, I think, a good value for price.
(The clothes from this site in general are rather cheaply made, I still occasionally shop on it because they're good enough for LARP and sometimes they do sales with really huge discounts. I recommend the hat because it is really a cut above the other stuff I bought from them.)