I bought a bike from a craiglist add. The lady told me she was so glad and relieved to have a genuine person buy her bike. She had almost sold her bike to a person using a similar international scam. The person used the same form letter with fill-in-the-blank names and prices, and poor spelling. He was very generous and was willing to pay extra for her trouble to ship the bike. Luckily she got suspicious and backed out.
These scammers seem to hunt on craigslist. Do not reply to those emails.
-Shimpie