If you're a thrifty shopper, your best bet is this Hat Attack Beret. It's a popular piece, while not very expensive. In this price range, you can also take a look at this Plush Beanie. It's also a popular item and won't break the bank. Or you can opt for this Beanie. This item has all the potential to become a powerful player in your wardrobe.
If you're looking for a happy medium, consider buying this White + Warren Beret. While the price is very reasonable, this item is an easy wardrobe update. It's also worth taking a look at this Rag & Bone Hat. This item is extremely popular and, just as importantly, not very expensive. And do check out this Rag and Bone Hat! It's a very popular item and good value for money.
If you're not the one to skimp on clothes, then you absolutely must check out this Eugenia Kim Hat. This item seems expensive, but it's top quality.