I finally used up the last of the filters supplied with my ER-6i headphones and have been needing to get some more before I get out on the road for the trip. They’re a little harder to find that I thought. Even though you can order them directly from Etymotic, I hunted around a little to see if there was a better deal. I found a small independent recording studio who is selling them cheap, and what the heck, supporting independent music, even if indirectly, is a good thing. So if you’re looking for ER-6i filters, head on over to Sage Arts and give them your money!