Accessories are a world of their own. If you’re an innovator that addresses a small niche, there’s not much competition, but you still want to keep your margins in check or copycats will rush in and steal your market. I’ve no idea why the price is this high, but it’s just not the Revolva with lens support foot specifically designed for the Pyxis that seems to be a high price, it’s their approach across different products.
I think the Revolva with A and B cartridges together addresses my biggest beef with current internal 0, 2, 4, 6 or 7 stops filtration. The behind the lens system provides 0 through 7 in one stop increments. I have full quality sets of rectangular filters and 82mm screw-on filters, 2-4-6 86mm filters and may need to add several M105 filters screw-on when I add the DZOfilm 18-90mm PL zoom! For anyone starting out who decides to use PL mount lenses (good idea) on L-mount cameras like the Pyxis (great idea), $1,500 is actually a significant cost economy as they may be the only filters you need regardless of the various sizes of lenses you attach in front of them, and in a super convenient package compared to the time and care to wrangle what I have.
I have briefly investigated the cost of adding seven quality matched M105 filters.
Tokina Coarse Water White Glass IRND 105mm $485 each!
https://www.bhphotovideo.com/c/product/613498-REGTokina Cinema Pro IRND 105mm $149 each.
https://www.bhphotovideo.com/c/product/1278549-REGSo for those of us have lots of filters, it hurts, but for those who are starting out or moving up to better lenses for these amazing cameras, there’s a silver lining.