Heliproz will ship via USPS, but it is not an option on their web page you just have to ask for it.

Living in Canada, I will not order from anyone who only ships via UPS. UPS has their own clearing house to get things over the border, which adds about 50% to the shipping costs. A friend ordered a radio that was shipped UPS, the brokerage fees were over $100. I had a radio shipped FedEx and only paid $25 brokerage fees.

If you can handle the extra time for delivery USPS is even cheaper.

Dean