I'm unaware of an official timeline. As far as price schedule it will differ with the different steels. The first steel will be 52100, the next POSSIBLY CPM M4, maybe not. I believe we are going to vote for the steels to be used with production scheduled tenatively at 3 mules per year.
As far as prices being different think different costs of the steel itself, shipped from different sites, then blanked or laser cut, etc. etc. These are CPM steels, tool steels, High speed steels, bearing steels, stainless bearing, stainless corrosion resistant mold steels, etc. They are neither inexpensive, or easy to work, machine or heat treat. That's why they aren't being used in regular production knives.
There is a lot to look foreward to, and in some cases Spyderco will be breaking new ground. As always I trust Sal to keep costs down as much as possible but I still get amazed that these mules will be built at any cost. Indeed I'm really looking foreward to these mules whatever the cost will be. BTW, when was the last time anybody here had a knife containing niobium/americum in it? How much tungsten is too much? Can YOUR knife withstand boiling sulfuric acid? Gives a new meaning to "survival knife" eh? Joe