If you're on a thrifty mission, this Civil Cap will fit the bill. It's a great choice, while not very costly. In this price range, you can also consider this Civil Baseball Cap. It's also a popular item and won't break the bank.
If you're looking for something in between pricewise, look no further than this Calvin Klein Baseball Cap. This item won't break the bank, but definitely deserves a place in your wardrobe.