I'm new to posting here and still getting the feel for this forum. But I notice a lot of pipe makers and probably many people who refurbish pipes. So I thought you might be interested in these two links. This is the harbor freight heat gun for $9.99. I have one and used it to bend stems, remove paint and bend wood the thing works great.
Ebay auction for over 2000 pipe cleaners with 7 hours left. Free shipping and at $16.50 right now. That would last me a long time
But those who refurbish pipes have to go through a ton of these and every penny counts.