It is physically impossible to exceed the weight limit for a Small Flat Rate Box
What many may not realize is that there's a thriving industry in sending passengers on planes for the sole purpose of them taking things from A to B.<p>Years ago, you could get discounted flights to Europe where you couldn't check in any luggage. Why? That allowance was taken up by documents for various clients. This was usually quicker than any courier services at the time.<p>I've had friends who worked in the oil and gas industry. One story I was told was where parts were desperately needed to repair a drill bit on a gas platform. The best option? Someone would fly halfway around the world, drive to a particular factory, wait for the parts and then fly back. This was cheaper and faster than any courier service, even if you spent $10,000+ on the ticket.<p>This was exacerbated because a person with 200lb of machine parts could walk through customs where a shipment might get stuck in customs for weeks. And each day of non-operation cost hundreds of thousands of dollars.