I charge $1500 per spam piece for reading, so he owes me $1500... whatever else other people charge, that's what he owes if he wants to pay for my time of reading garbage and using my bandwidth and hard drive space to store the email on my servers.

Dear casascius.

Today I found in my email a spam coming from your website and IP-address, advertising for your website casascius.com. Sending such unsollicited email to people in my country is a crime. In addition, because of costs of spam for me, I also charge per spam, feel free to pay the bill by sending 100 bitcoin to: 1DESYhdFBUdQyTWBpLif6BQdr3FRcKBHWL