Lee, I'll have to double-check where I got it, but I think it was from Same Day Music. I think they were the only place I could find it in stock when I needed one.
I just noticed that Digitech has announced a new similar product, the VL3D. http://www.samedaymusic.com/product--DGTVL3D
Evidently it's not available yet.
Oh well, the Harmony M does work as well as ever. It's just the principle. I've wasted too much time with this.
I won't need one anyway when the Audya arrives!
DonM