You probably haven&#x27;t ordered a sub $2 product with free shipping from aliexpress recently, have you?<p>They are not shipped together and broken out at port, they get separate tracking numbers in a separate package.  There is no fulfillment middleman on the US side.<p>Looking at USPS&#x27;s domestic rate table to understand how most aliexpress shippers get their products to the US isn&#x27;t likely to be that enlightening.  Read up on epacket, which is one program between Hong Kong post and USPS that is used pretty frequently.