If you're on a thrifty budget, this Pendleton Blazer will fit the bill. It's a popular choice, while not very pricey. In this price range, you can also take a look at this Elie Tahari Jacket. It's also a popular item and won't break the bank. You may also want to look at this Paperwhite Blazer. This item is not expensive either, but it will make a difference in your wardrobe.
If you can afford to spend a little more, look at this Bogner Blazer Jacket. While the price is very reasonable, this product is an easy wardrobe update.