Hi Brian,
I'm a 'long-time listener' to the forums, mostly in the softbaits and wirebaits section (new hobbies for me). I've tied flies commercially for a number of years and guide for smallmouth. A great source for chenille is Barlow's Tackle (FISHING TACKLE for bass fishing, crappie, walleye, trout.Fishing lures, fishing hooks, lead molds. BARLOWS FISHING TACKLE.). They carry a big selection and offer some of their chenilles in 'bulk' skeins at a good discount. No wholesale prices, but still quite cheap.