Yep...that statement has everything to do with the pricing on the Cwejman stuff. If I'm going to drop $800-ish on a Eurorack filter, it needs to do EVERYTHING...up to and potentially including making coffee and kissing me in the morning. These are prices that I would associate with the expensive end of the West Coast, like Buchla, original Serge, etc. Not Eurorack.
Sure, there ARE some Eurorack modules that cost piles 'n' piles, but they're usually things like the Sinfonion, which are super-complex and pretty unique. But the RES-4 is so akin to the Jurgen Haible resonator...which tends to go for a lot less when you find it...that I think that dropping that much is a mistake. It's sort of like buying a Rolls-Royce: sure, it's expensive...but just like any other car, its value drops by 1/3rd when those tires hit the street for the first time.