Well, I congratulate you on selecting the best case maker in the world.
However, it is rare that you see a used one for sale. Jim did make a few "generic" cases which were a little less featured than his Vintage Line (read: less expensive). A couple dealers here on AZ had some but they never last.
As essentially all of Jim's customers have some sort of personalization done to their case (design, name, initials, etc), it is very rare for someone to sell it. Plus they're so darn well made that nobody wants to part with them!
So you might find one of those generic cases that Jim made for Ebay, etc., but even those don't last long.
Give Jim a call - he's a great guy and may have something for you.
-von