When making a thread, the title should reflect upon the question you want answered. No more 'help', 'i have a question', or '?' titled threads. The title will be edited and the thread maker warned.
ive changed it for you this time but in future remember to do it yourself
long answer: they usually don't scam. Yet it may be good to buy from a trusted member (e.g. one who's not a new yellow belt account with a very few posts).
If he still ignores you, report him A$AP (under Scam Reports section, link before he has lost all his TC.
That should usually work.