They're listed in the IC:
Titanium ($1000+)
Stainless Steel ($800+)
Aluminum ($350+)
Which is quite rough, I'm sure the aluminium one could be at least $100 less.
Wow that is insane, was expecting an entry level price like tofu or qk60.
The price is a conservative estimate with everything (brass weight and dampers) packaged together.
I am negotiating with the manufacturers to lower the price. But for the Aluminum, it is very hard to manufacture this below $250 without sacrificing the quality as this is a two piece item with added complexity with gasket mounts. Adding costs for wool felts, brass weight, rubber stops, gaskets, screws, etc... the cost alone is easily $300+.
Now that is under assumption that this will be manufactured in small quantity, the price can go down if there's more demand - I'll keep yall updated on this.