USPS will come in by far the cheapest. Never, ever, EVER ship UPS
They will gouge you on shipping, they'll gouge you on fees at the border, they'll gouge you "brokerage". Ship anyone but UPS or you'll regret it.
I ordered about $2,500 + of stuff, USPS and shipping from Ultimarc in the UK (figure that out) came in the cheapest