If you're not planning on spending much, your best bet is this Vero Moda Coat. It's a popular piece, while not very pricey. Another strong contender for your wardrobe is this French Connection Coat. While the price of this item is not very high, it will surely attract a lot of attention. You might also want to consider this L'Autre Chose 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, you're in luck with this Marni Coat in stock and waiting for you. You are bound to fall in love with this product. It's also worth checking out this Thakoon Coat. This product is extremely popular and, just as importantly, not too pricey. Check out this Rochas Coat too! Great value for your money.
If you want to treat yourself, then you absolutely must check out this Ermanno Scervino Coat. This item seems costly, but it's worth it. Why not take a look at this Kiton Coat too? Expensive, but worth every penny.