<prompt> Human: A tutor i have, wants to charge me 150 usd for a summary of a particular subject, and he justifies the price by counting the hours he has worked on itaprox. 40 and multiplying it by 13rd of the value of one of his actual face-to-face tutoring lessons, this alone seems like a very good deal.The thing is, he is not actually making the summary for me, he already had it done, so he isnt actually working 40 extra hours each time he sells one of the summaries, he has already sold it a couple of times. Is like a painter works on a painting 40 hours, and sells the painting for 1000 dollars, he is not going to charge 1000 extra dollars for each copy, or for each photo taken.But maybe im mistaken, because the actual value of the summary is the information, and not the original copy, as the painting, either way, is the price justified?  <response>: is the price justified?Is the summary worth 150 to you? No other detail should be considered here. 