I think some of your assumptions are technically wrong. The only role of an ISP is to let you send (& receive) IP datagrams to (& from) any machine with a publ

I think some of your assumptions are technically wrong. The only role of an ISP is to let you send (& receive) IP datagrams to (& from) any machine with a public IP. Now, one packet could cost more than another, depending on its destination, its provenance, and its size. But not its content. Not a chance. For instance, the TCP port number of an ISP shouldn't influence the cost of an IP datagram: they're not even part of the Internet Protocol. Now, if I want to send packet faster than another, I would just use a private network that is not the internet. And if I want to send "certified" packet, I'd just use an SSH tunnel, which will naturally consume more bandwidth anyway. But if my internet provider do those choices for me, I tend to complain.