I am a very happy customer of Maksim's. I first came across his pipes about a year ago through Nick Miller's Quality Briar site and I now own six, including two of the ones Maksim showed earlier in this thread.
I can say that all of mine are engineered and carved with extreme precision, and they all smoke wonderfully. He clearly takes enormous care to make his pipes just right in every detail. It is a particularly nice feeling to put a pipecleaner through one of his pipes and feel it glide effortlessly to the bowl because of the polished airway. I think if you like the style of Maksim's pipes they are fantastic value. I believe you would have to pay a great deal of money to find another pipe with this kind of engineering perfection. I also think the texture of Maksim's sandblasts, the quality of his stem carving, and the precision of his shaping are outstanding.
Some of Maksim's recent and more artistic shapes are not really to my taste, but that's a personal thing and I applaud Maksim's willingness to experiment and develop his art. The way I think about Maksim's pipes is that they are made for everyday smoking and comfort, but have a level of internal engineering perfection that is far beyond this price range. That combination is something I think Maksim does better than anyone else.