For what it's worth, I got mine from speedway motors and have been happy with it (I have an early 1930 Town Sedan); looking at their website, they are currently charging $221 for both the 1930 and 1931 versions (have to select which one you want before you can hit the "Add to Cart" button).
I paid $12 shipping around six years ago for it (I'm in California, they're in Nebraska).