Alternatively, you can design your units to be easily repairable so you can stockpile spare parts, and do proper testing to reduce the amount of products that fail in the first place.

The problem is that virtually anonymous sellers and dropshippers on Alibaba and Amazon can and will undercut the pricing that is required to support that kind of infrastructure and development - and I'm not sure what the correct way is to prevent that, while still allowing start-ups and small shops to sell stuff in the EU.

I was being glib, offering it as a way out of the supposedly unsolvable problem. The real thing is to calibrate based on return rates etc, and of course if your devices can _just be fixed_ that’s great.