I would check out Club Monaco -- their version has a opera length sleeve with a slight bell shape. Its $249.00
I would also look at Banana Republic -- their version is a bit more classic and retails for $198 BUT if you use the code "January" I believe you get 15% off plus free shipping.
Additionally, check out Zara which should have several different versions of trenches -- the trick with them is that different stores get different styles so what I am seeing in SF may not be what your local Zara may be receiving.