If you're not planning on spending much, your best bet is this St. John's Bay Polo. It's a fantastic piece, while not very costly. Also check out this U.S. Polo Assn. Polo. It's a product you're bound to love which also doesn't cost a fortune. You might also want to consider this Van Heusen Polo. The price is very reasonable, but the effect on your wardrobe will be pretty fantastic.