You don't need to convince me that juicero was stupid and unnecessary, just saying there's an analogue to gp's example in that there are already fairly expensive ($4/bottle) juices out there showing that there's a market for juice. There are also much more ridiculously priced juices, including, yes, $8 juices. I'm not the target market for those, but they exist at cafes and some other grab and go type places and have for a bit, so there must be at least a small market for overpriced juice.

I'm not sure it's analogous though. It'd be analogous if juicero were selling just another juice bottle ready to drink but maybe mailed to you instead of sold in stores.

What juicero did was sell you an expensive machine to essentially squeeze odwalla bottles for you into a cup... something ludicrous like that.

There may be a market for juice bottles, but juicero wasn't selling juice bottles.