Mine are 5 cents apiece. I believe they are only 5cents do to them being strictly SMS and not MMS. Most packagesfor texting are actually MMS packages when not on an iPhone plan. My sister is on my account, and hers are 10 cents apiece. She has a MMS package.Should be $0.15 a text.
Call AT&T and see if you can get your friend's number blocked for texts. He sounds like a royal jerk anyway.