I got a price to ship 12 bottles of the filler & 12 bottles of the bluing, it's about $300. That comes to $25 a kit but then would have to be shipped in individual kits once it arrived to the US, I'm guessing that can be done for about $10. I don't know if we need their bluing or using standard cold bluing would be fine. If that's the case we could cut the price somewhat in half. I just emailed them about buying just the filler "Kyt for Blacken".
I don't know if this qualifies for a group buy discussion or if someone else wants to take this further. I have all the details but I honestly don't have the time to be the lead on something like this. If you guys want to go further with this as a group, I think Hatch needs to be contacted to see if it's a viable group buy option.
I can also forward the information for individual purchases if only a few people want to order but the shipping cost may be as much or more than the product.
If someone wants to take this further contact me and I'll send you all the information, Jason
P.S. I asked for a price for just the Kyt for Blacken shipped. He gave me a price of $225 shipped for 24 bottles, that's less than $10 bottle plus the added postage to you.