As an ATV owner, I occasionally look at Craigslist to see what they are going for. Every once and a while I will see one like a Ranger that is a few years old asking $1,500 or $2,500 when they sell all day long for $10,000 or more. One ad that I asked about because it was supposedly local responded, when I asked to come see it, that they had moved to Louisiana but had an arrangement with eBay and could ship it anywhere in the country for free.
I responded that I had a brother in Louisiana and could get him to come look. Never heard from them again. After a little research on Craigslist, I found the same ad posted in every state between Massachusetts and California.
Be very careful dealing with sites that don't have a feedback system and I never deal with anyone that doesn't have at least a dozen positive feedbacks if it is a big item. For $5 I'll take a chance but for $650 I would be very wary.