Avoid doing business with r

I once arranged to buy a TV from the user r_pet@hotmail.com. We agreed on a good price, and I was ready to come over, but a day later he started sending what I felt were bizarre messages about spam and broke off communications, never explaining himself. I have a guess about what happened, I suspect he didn't like the price any more and made up a story to back out, but I will never know. Still, I suggest avoiding this person.