Their are people out there trying to make money cloning Trainwreck amps. These are people who do not have the ears and work ethic necessary to design and build a good sounding amp. If you find a clone you like and you think it's worth the money, by all means buy it. But don't be fooled into thinking you have something that sounds like a Trainwreck.
A "Trainwreck styled" amp is one that borrows from Ken's designs but is built using methods/materials that Ken felt degraded an amp's tone.

There's a stomp box out there with a train on it that purportedly will give you the sound of a Trainwreck. Don't believe it!