you may not get many US people to reply to your queries about their Craigslist ads. Posting anything on Craigslist brings out the scam artists. For me, If I get any inquiries from overseas or even out of state on my craigslist ad.....delete. Plenty of action locally if priced right.
The only way I would even consider it is if the buyer arranged to have a local shipper come pick up the bike and pay me with cold, hard cash where I can confirm it isnt counterfeit and I can deposit it in my bank before I let the shipper take possession.