Apologies if this is posted in the wrong place.

I am compiling a list of the best places to source signed music / books from primary sources / D2C with the view to releasing it to collectors later this year, as this is a fairly big job.

I am especially interested in the small outlets / stores I may miss or not be aware of, or even markets that would be usually overlooked like Italy, Spain, Mexico, Japan, Korea.

This is meant to be a guide for collectors, new or old, and help people avoid having to buy on secondary market.

Any help, thought or advice would be much appreciated. Do not hesitate to fire away, I'd rather have a name / link mentioned several times than not at all.