Richard,
What was the sellers handle on GRM? I've had a similar email about a T5 transmission I was looking for, but elected not to reply as A) I had found one, and B) anytime someone replies with "my uncle" or something similar, I delete the message. In this day and age, if the uncle can't write his own email, I wouldn't want to send any money. If they wanted to meet in person, then that's another story.