Where to Buy Sound Isolation Clips

[John G.]

I am planning a new over-and-under duplex build and want to use the best methods to reduce sound transmission between floors.

I read suspending drywall on resilient channel attached to Sound Isolation Clips from the floor joists are a good way to reduce vibrations to the lower floor. I would need at least 4 clips per drywall sheet.

In an internet search, the cheapest US suppliers that post prices appear to be charging almost $5 per clip, even in 1000+ quantities. From China, they appear to be around $0.50 each. I figure air shipping would bring the cost closer to $1/clip.

Are there better sources for buying Sound Isolation Clips?