If you're a frugal shopper, your best bet is this Topshop Duster. It's a fantastic piece, while not very costly. Another strong contender for your wardrobe is this Topshop Coat. While the price of this product is not too high, it will certainly attract a lot of attention.
If you can afford to spend a little more, you're in luck with this Topshop Duster in stock and waiting for you. You are guaranteed to love this product.