I just found a white "Mr. Fox" head at Marshall's for $30... the normal asking price for this online is $80.
The Jaw moves when you talk and it's pretty easy to see out of. It seems like it will fit a good amount of adult-sized heads since it easily fit over my sister's head and she almost never fits into store-bought hats.
This is a realistic fursuit head and the quality is excellent for the price. It rivals a few of the homemade ones I saw at the furry convention a few months back. The eyes are a little derpy (presumably so you can see out them easier) but that could probably be fixed with some extra mesh and a little glue.
If you're looking for a good-looking fursuit head and you're on a budget I really recommend checking your local Marshalls/TJ Maxx as they just got this item in for Halloween and it probably won't be there for very long.