If you're not planning on spending much, your best bet is this BCBGMAXAZRIA Waistcoat. It's a wonderful product, while not very pricey. Another strong contender for your wardrobe is this Theory Vest. While the price of this piece is not too high, it will definitely attract a lot of attention. You might also want to consider this Double Breasted Blazer. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking for a bargain, you're in luck with this Smythe Blazer Jacket in stock and waiting for you. You are guaranteed to love this item. It's also worth considering this Halston Jacket. This piece is extremely popular and, just as importantly, not too pricey. Consider this L'Agence Blazer too! Great value for your money.