Price is the real NGU technology. 

 but I would think that the maintenance cost of a DNS service would be flat if not decreasing. so I would think the price I would pay would just be flat. I don't understand why some of the prices would double.  

 Prices also increase because of subjective value by buyers. The price of a good is not only the cost of money and production. It is also how the market values a good on the margin.  

 sure but am I to believe that the subjective value of a dot com domain has doubled? 

 Doesn't matter if you beleive it. That's what subjective means. If enough people are willing to pay it...

I agree with you. I think it's too much. Also the market price of bitcoin is wrong. IMO. But that's how markets work.  

 there's a difference between "we are running out of stock. increase price to manage flow" and "we think people will pay more. increase price to increase profits." one is done out of necessity. one is done out of greed.