I don't begrudge a person trying to make a profit, and I do not presume to know their COB. I do believe that we've become delusional and disconnected from what anything of true quality and value costs to create. My hope is that free market forces would have us end up in the middle of what is fair to both buyer and seller eventually. And yes, in many cases the rent is just too damn high....
Discussion
Just like how people don't understand how Bitcoin could reach the millions of dollars range, most people don't understand price discovery. The Austrians say it's your duty to charge the highest price people are willing to pay. That is generally true in an economy where the money is a know quantity. Dollars are unknown and whit everyone equating the value of a Bitcoin to some dollar amount it skews the relative price differential of goods.