If you're not planning on spending much, this Coat will fit the bill. It's a great choice, while not very costly. Another great option is this Trina Turk Coat. While the price is competitive, be sure that this item will become an excellent addition to your wardrobe. You might also want to consider this Soia & Kyo Coat. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
For something in the middle of the price range, take a look at this Coat. While the price is very reasonable, this item is an easy wardrobe update.
If you're in a Treat Yo' Self mood, then what you're looking for is this Cape Coat. It's more expensive but worth your money.