Since my favorite brand of pipe hasn't been in production for over 60 years, the estate market is the only way I'm going to obtain them. Buying an estate pipe that been well maintained is generally a good value, a lot more band for the buck, and you have a wider selection of makes and styles to choose from.
There are some people who are horrified at the thought of putting their mouth in the same place that someone else's has been, and I assume they married virgins.
I don't care. Once I've done a deep cleaning and sanitizing I'm good to go. K also have pipes that I bought new, pipes I've commissioned, but the bulk are estates and I've been very satisfied with the results.