The thing is, prices tend to drop steadily over time (adjusted for inflation and innovation, but that's how it generally goes). Benchmade buys a huckabuck of 154CM from Crucible and Crucible is able to use that money to streamline their manufacturing processes and sell their metal at a lower price while still making a profit. Benchmade is now able to buy their materials for less and, coupled with their long-term experience with their materials, make them with slightly less effort, which allows them to sell for less. That's not overexposure, it's just a force of the free market.
As Patryn said, many of the limited editions are made for distributors who want to boost their profits by appealing to collectors. Some of the materials now more available and some of the labor is now
easier because of experience or better equipment (not easy, just easier), so it takes less money to entice folks like Benchmade to make these limited editions for the major distributors.
The best thing is to either let the market decide, as Walking Man said, or let Benchmade decide. If you like some of these limited editions, be thankful for the benefit brough to you by economic freedom and the self-interests of Benchmade, their distributors, and your dealers. If they're not your thing, be happy that the rest of us fools are parting with less money per Benchmade.
Yes, that's it. Don't worry, be happy. Be very happy.
