Merch links:

Trashmark (German):
https://shop.trashmark.com/index.php?dlink=10506

Nuclear Blast:
http://www.nuclearblast-musicshop.de/index.php?band_id=938

Century Media:
https://shop.centurymedia.de/shop/index.aspx?page=search&search=napalm%20death

JSR Direct:
http://www.jsrdirect.com/cgi-bin/category.cgi?category=NPD