If you're in a thrifty mode, your best bet is this Eleven Paris Coat. It's a great piece, while not very costly. You can also take a look at this BB Dakota Coat. It's an item you're bound to love which also doesn't cost too much. You may also want to look at this Sea Coat. This item is not expensive either, but it will make a difference in your wardrobe.
If you're looking for something in between pricewise, you're in luck with this A.P.C. Coat in stock and waiting for you. You are guaranteed to love this item. It's also worth considering this Steven Alan Coat. This item is ultra popular and, just as importantly, not very expensive. Alternatively, opting for this Theory Coat is a great choice as well!