If you're on a thrifty mission, this Harris Wharf London Coat will fit the bill. It's a foolproof choice, while not very pricey. You can also look at this Enfold Coat. It's an item you're bound to love which also doesn't cost a fortune. You may also want to look at this J.o.a. 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, check out this Gianluca Capannolo Coat. While the price is very reasonable, this piece is an easy wardrobe update. It's also worth looking at this Versace Vintage Coat. This item is ultra popular and, just as importantly, not too pricey. And do check out this Sonia Rykiel Coat! It's a very popular item and good value for money.