I've had quite a few guns new and used and only ever bought one from Mark. I'm not worried at all. As someone put it; when there's a will there's a way.
Mark was selling to the masses; it was publically available to anyone. If you look closer, you'll see other retailers. Mostly on the classifieds.
To the new guys; this will filter out the people that are not serious.
WE AIN'T DEAD