Those are manufactured by Late For The Sky. They do a really nice job with them. I'm pretty set in doing the wooden games but if I did the "cardboard" ones, this is the company I would choose... although they are pretty expensive. They have "agreement" with Hasbro to produce opoly-style games which I'm sure Hasbro isn't thrilled about but they can't really do anything about it. By using them I basically get Hasbro's approval and don't have to worry about their lawyers contacting me. lol
I just started working on Maryland'opoly (again wooden and making probably less than 100 games)...