I agree $5 is a good price for the pattern. But also think of this. When you go to Walmart now they have those cups that Starbucks uses in the coffee area with the filters and creamers. As well as the sleeve that goes around it. All you have to do is cut the sleeve from there in half and then do the pattern an inch or an inch and a half larger and there is your pattern. Of course what to put inside is up to the seamstress.
ETA: This is for those that do not have a Starbucks close by to get the cup of coffee