@roger,
Roger. According to the British article I read, merchants pay more to have checks processed than credit card transactions. I have an MBA and have tried to decipher the monthly credit card statements and my bank statements for my businesses re revenues. Impossible to figure out.
If you want to do your local businesses a favor, pay in cash. Otherwise 1-3% goes to some check or credit card processor.
Can I prove that? I think I could if challenged.
(edit: thanks Hawkeye, for confirming that).