Bowser and M.D.C. stopped making kits around 2000. The old kits cost too much to make and did not sell well anymore.
I bought a MDC 2-6-6-2T just before they stopped producing them and I have to say, it was great fun, (and a challenge) to build it. I'm in the process of converting it into a cab-forward, have not worked with it for some time now!