I clicked the google express link in the post on January 1st. Put my order in and received it today January 4th.
GoPro Hero 4 Silver Music- $199.99
Tax and Fees- $20.50
It's sold out/not available in my area(NYC) but I figured it's worth a try for anyone else looking for one in other areas. Mine shipped from Boston, so that area might be sold out as well.
So it's a definite YMMV.
Sorry for not providing a link. I'm doing this on my phone, and I honestly don't have a clue how to add a link. Just go to google express and search for GoPro hero 4 Music and scroll down to guitar center as the vendor. Hope you're as lucky as I was.
Hope the information helps.