I think fish307 has decent prices BUT try to get out to a place that stocks them and atleast try em on with your layers. The sizing runs screwy and if they are too tight they will not be warm.
For comparison I am 6'00 215 and I wear large bibs and a medium coat and they are perfect for ME with MY layers on. I would have thought that with my height and weight I would have been XL's in both. I bought mine locally at a shop that gave a great discount for members of a local Michigan outdoor forum. Saved about $75 bucks and was able to try on a bunch of different sizes with the owner who was one of the first stocking dealers and has alot of knowledge about sizing. Unfortuantely he had a falling out with the forum site and no longer offers the discount to members.
J-