I have several Savinelli filter pipes I use to smoke an occasional aromatic. Here's how to save money on the filters. Instead of buying the actual filters. I go on ebay and buy a pack of balsa wood rods in the right size (3/16x1/8"). I cut them to length and that's it. Cost is about 10% the cost of filters and they work just as well. A tip: if you cut the ends on a slight angle the pipe draws better.