Everything in Eurorack costs a lot, but for mixers it's ridiculous. Just to pick two things in stock at Thomann today :
* Befaco Hexmix + Hexpander = £730
* Soundcraft Signature 22MTK = £700
The difference in capability between the two is huge. By all accounts Hexmix is a good mixer, but you pay a gigantic premium to have it your rack. If you really need that for your live show or whatever I guess you just have to pay it, although there are lots of mixers in 19" format. In the studio it's nuts.
I'm just starting out so concerns in regard to performing live or recording are far off for me. Right now I just need to mix down so I can listen on headphones as I begin to explore.
From what I have seen in terms of a performance mixers, outboard is functionally better for less money, so yes, when I get to that stage I agree 100%.
People often say modular is a bad choice for drums, but at least there are lots of interesting options (like BIA, the WMD modules, the SSF Entities... drool) that don't have obvious equivalents in other formats. Big multi-channel mixers -- nah.
Obvious this does not apply to small inline mixers that can do CV as well as audio. Those are essential.
Yes, I think that is sufficient for living room jam needs for now.
-- the-erc