As @Vadim said
And this is the reason. He gamed the system by proxying the different IPs to his nodes.
But it’s expensive, as he agreed.
@Pentium100 you can try to run more nodes, but I don’t know, with what you will compare to make sure that your multiple nodes behind the same subnet /24 of public IPs got more traffic than when you have the only one node for the same time.