No, US sellers can't ship using an international shipping program. It's two fundamentally different things. You can try to set up a comparison that's closer. T

No, US sellers can't ship using an international shipping program. It's two fundamentally different things. You can try to set up a comparison that's closer. That would involve sorting discounts on the US side. Chinese shippers sending packages through UPU are going through UPU wholesale rates, because they're all processed in bulk before it gets to the US. USPS doesn't pay for getting it from someone's local post office into the US, they pay only once it's already in the US. You can't compare that to retail prices someone pays at a US post office, because that pays for "first-mile" processing.