Earlier quoted context omitted.
No. I'm surprised Comcast or some other ISP doesn't step in with a claim of tortious interference. Reselling or granting access to the ISPs services like this is almost always against the ISPs terms of service. The consumer is in no place to consent to this exchange.
On the other hand if you want to resell 2% of your bandwidth the ISP shouldn't have any say in that.
At the very least, consumer connections explicitly disallow "Commercial Use". That means that you can't use them to run a business. You can't use them to turn a profit. You can't use them to generate revenue. That means no running servers, and that means no "reselling 2% of your bandwidth" for a few pennies because some Euro-Trash-Stranger wants to borrow it!