It's called RipGuard-MOD and, according to this company , it'll be as cheap as a few dollors for one disc and under a dollar for larger quantities.
No need for DLT tapes either, just a finished DVD.
The manufacturer doesn't claim to stop all copying.
This product is for producers who want to prevent casual copying by non-technical people and less knowledgeable pirates.
I have had this be a substantial problem in the past, but I saw a large reduction after I put legal language about "fines and up to 5 years in federal prison for illegal copying, even without a profit motive" on my invoices.
Nothing like "Club Fed" to get people on the straight and narrow.
Macrovision doesn't prevent copying. It just prevents making a good copy. I've seen lots of home collections of VHS copied from Macrovision protected tapes. They look AWFUL! Of course, they're usually done at EP/SLP too which makes it even worse. Yet, they happily watch them. I've even seen EP/SLP copies of these EP/SLP copies. I guess to some folks, quality doesn't matter as long as they've got the movie.