Well, threads like this appear regularly. Bashing Dunhill pipes is a sport of sorts among the multiple pipe groups in the Internet. Dunhill used to be the brand I purchased the most, and I always thought they were worth the price. However, a few years ago (can't recall how long ago this was, but I would say about 5 years) I had an issue with one pipe and had to return it under the warranty. It turned out to be a major pain in the caboose!
The distributor (Music City Marketing) said they don't have anything to do with the warranty, that they are only the distributors. (What the ...?) They directed me to Dunhill (yes, the mother company). After some struggle, I found the person that would deal with it. After discussing the terms, the pipe needing replacement was sent to Dunhill (not to MCM, they washed their hands the very first time I contacted them). After a long, long time and many phone calls I finally received the replacement pipe. It was a shape and finish not even remotely like the pipe sent in for replacement. The Dunhill person did not know anything about pipes and didn't really care. Eventually, I decided to eat the loss just because I had enough of it. It was a loss because the pipe I got (tan shell) was priced lower than the pipe I sent (bruyere). I decided then and there that this is not a business I care to sponsor and never bought another Dunhill.
However, I was always happy with the pipes and thought they were worth the price paid. I might even reconsider buying more if/when they change distributor.