Learning to do it yourself is a must-do if you may do it from time to time. Otherwise, it's not an expensive job for a pipe repair person. They may take some time to get to the work, but after that's, it's a quick job. Replacement stems seem to result in a big step down in price on estate pipes, but if you're keeping the pipe, I doubt they decrease the smoking at all if done right. If you can tolerate a replacement stem, it can reduce the price of an expensive pipe a lot. (Off the posted subject, but still about replacement stems.)