Comics Buyers Guide (CBG) is probably the oldest existing publication devoted to all facets of the comic collecting hobby. The Comics Buyers Guide is a must for all collectors who want to be informed about the industry. ComicCollectors.net / Collectors Assemble!, prior to that, Marnin Rosenberg has advertised in the Comics Buyers Guide for almost 30 years. Throughout that period, specializing in high grade comic books, this strictly mail order company has earned multiple CBG Customer Service Awards.