Do you need the hats in a hurry? If not you can consider sea shipping, which is much cheaper than air shipping and Express.
Express is the fastest way for you to get the sample, usually 7 days. So its price is high. But for bulk orders, you can try Sea shipping(for US Cnada), Railway shipping(UK Italy), which are very economical. But for sample order, they are too slow. What's more, they has to start weight.