or even more than fair, just check the prices at e.g. turbosquid...)?

Please do not use Turbosquid and CGTrader as comparisons. Models on those sites are expensive because when you buy a model, you are also buying a commercial license, unlike at any of the DAZ/Poser sites. If you want a good comparison, look at the prices for 'Extended License' products here on Rendo.

As for site design they may have made some bad decisions yes, that happens, but the new "must work on all devices" demand can make it extremely complex to design a site that both fulfills that demand and is good looking and well functioning at the same time.

RDNA, Hivewire, and DAZ do not have that same problem. Or is Hivewire not an "all devices" site?

That's just google trying to maximize their profits, at the expense of smaller companies who have to spend a lot of money in constantly keeping their sites up to date with google's SEO requirements.

Yes, I'm well aware of that. Problem is that people here have said that Rendo doesn't work very well on ANY device.