Like how prices weren't that high as people think, and then citing 37 documented examples of people that than paid what amounts to the yearly wage of a master craftsman for some bulbs (and those are just those that they could find documented) -- as if those are not crazy prices still.

Or how the author says that bulbs were exchanged in neighborhoods and taverns and such, to brush off the craze as "small scale", and then goes on to say how specialized exchanges emerged in most cities, with experts in such trade etc -- without seeing the contradiction.