‘The price of free’ Posted on Tuesday, March 19th, 2013 at 9:20 am. PTWritten by Peter Cohen Running a sustainable business requires generating sustainable revenue. Charge money for what you create.TANSTAAFL. Hardik Panjwani Haha. Love the Robert Heinlein reference Peter. Steven Fisher Spider Robinson wrote a novel, “The Free Lunch,” which explains the one case where there is such a thing as a free lunch.I think he’s found the only real case, and it involves (spoilery sci fi omitted). kibbles Marco Arment writes here why “free” is popular to some app devs.http://www.marco.org/2013/03/19/free-works…acquisition.