If you're budget-restricted, you'll appreciate this Amici Accessories Cap. It's a popular choice and a good investment. Another savvy option is this New Era Baseball Cap. While the price is rather reasonable, be sure that this item will become a valuable addition to your wardrobe. You might also want to consider this American Needle Cap. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.
If you're looking at it like an investment piece, then you won't be disappointed if you check out this MCM Baseball Cap. It's an expensive but smart option. Why not take a look at this Moschino Baseball Cap too? Expensive, but worth every penny.