That T3000 is not a T3000. It is a Cyclone 1. Not coin operated, no newer bearings, men, side strips, balls, etc... just an FYI. I emailed him and let him know and he apologized and didn't mean to misrepresent but never fixed his ad.
I saw a coin operated Brown marble in good shape go for $300 a few months ago.(In Denver) I tried to get it but someone beat me to it.
Don't look for anything below a Cyclone II. The tables don't feel nearly as good below that.
If I was you I'd just keep checking daily and you need to be the first on a good deal as others are also looking.
Also check Pueblo as me and a friend bought two Grey marbles from down there for a good deal.