This 4-ply cashmere cardigan is a very good value. It's very similar to Drake's ($1125) and Ben Silver's ($685) and is approx. $750. I own two camel hair sweaters from Berk, and the quality is excellent.
I've been thinking of buying this one or this one from Esemplare. Both are chunky and each also has a down vest which is removable. Perhaps not for "deep freeze", but ought to be suitable for 'freeze".