Some people on the Internet are curious about how much a shirt cost in the middle ages. Now you could try to answer that question by trying to calculate how long it would take to spin and weave the linen and sew the shirt, combining your guesses in an elaborate chain of assumptions using your modern education. A certain Eve Fisher imagined and calculated and came up with the figures $3500 or $4200 for a shirt like those depicted by painters like Peter Brueghel the Elder. This has been re-posted by a number of popular websites, and several weavers and spinners have dropped by her website to comment that they are not so sure about some of her assumptions. But did you know that we can skip all of these guesses and calculations, and the questions which they pose about whether we spin and weave as fast as people in the past, and just ask medieval people how much they paid for a shirt?