And it's bass became famous from Seinfeld. Every time I hear that bass, I think of the irritating lead in to every Seinfeld episode. So grating.

But in number of absolute units in operation, I don't know... Unless we compare number of modules sold vs number of Microkorgs. Modulars are expensive!

Eurorack can be expensive, but Behringer came out with a line that includes the Model D, Neutron, Pro-1, K-2, Wasp, and CAT—they’re all cheap, they’re all complete synths, and they’re also all Eurorack modules that can be plugged into a larger system.

Moog is also selling synthesizer modules that are actually Eurorack form, but upscale from Behringer.

I don’t have a modular synth, but it’s getting harder to avoid Eurorack.

So often eurorack synth building ends up in addiction like gear acquisition syndrome that it's almost like gambling. The only reasonably priced building is via DIY kits, but it still end up expensive and even more so time consuming, so it suits those who like soldering more than making music. I'm excited for a few digital eurorack modules, like Erica Synths Black Wavetable VCO, but no one could argue that it's affordable for a hobbyist.

Considering that you might easily spend more money if your hobby is playing the violin or piano, or taking photographs, it doesn’t sound outrageous to me.