Nothing to do with market research,

but in my spare time, I sell vinyl records and CDs.

If classic vinyl appeals to you, and no one can deny that vinyl sounds so much better than digital music, my record store in on the websites of Discogs and Musicstack:

https://www.discogs.com/seller/Sandal-Records/profile

http://www.musicstack.com/seller/sandalrecords

 Hope to see you there