As stated earlier, always go see the game personally before paying.
Trust your intuition, if something feels off then back away from the deal. Its not worth all the hassle and frustration.
One guy was selling an indy for a nice price. When I mentioned I lived only a one hour drive away and wanted to see it in person he suddenly said he indeed lived there but the pin were in another city further away at his parents and wanted to ship it. Could be true but seemed weird to me so I just called it off. Pretty sure that saved me problems.