If you're a thrifty spender, your best bet is this Cédric Charlier Coat. It's a terrific piece, while not very pricey. Another strong contender for your wardrobe is this MSGM Coat. While the price of this product is rather reasonable, it will surely attract a lot of attention.
If you're looking for a bargain, we've got your back with this 6397 Coat. This item is likely to become a total wardrobe staple. You might also be interested in this Carven Coat. It's an attractive option both price and quality-wise. Check out this Helmut Lang Coat too! Great value for your money.