If you guys want to defend selling any item for whatever price a person would pay, since it's their own responsibility, I understand. In a way you are right.
But personally, I would only sell items with acceptable profit margins. My website for examples, operates at tops 50% profit, and that's before income taxes. This is where the free market really does justice, right now you've got about a handful companies producing miners, if there were 100 companies doing it, they'd have to compete with each other, but they know barely anyone is producing this hardware, so they're holding you by the balls as much as they can. Milking you for how much is possible.
Never worked in the hardware end of mfg have you?
Typical
NET profit is well over 100% depending on the industry and yes, the quality of competition. In my industry (industrial lasers) mfgr markups from material/labor costs are typically over 150% and integrators still can easily charge another 75-100% markup on
their costs of equipment bought from the manufacturers to be made into systems for our customers.
How do we 'get away' with it? Easy. Our systems generate massive profits for our customers. Same as mining can.