If you don’t want to splurge, this Kasper Blazer will fit the bill. It's a popular choice, while not very expensive. In this price range, you can also check out this BCBGMAXAZRIA Blazer. It's also a popular item and won't break the bank. You might also want to consider this Blazer. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're not a thrifty type, then you won't be disappointed if you check out this Roberto Cavalli Blazer. It's an expensive but smart option.