Hardcore comic book collectors need to download the excellent new FREE app, Key Collector Comics (available on iTunes and Google Play), which helps collectors quickly identify which books are valuable without the clutter of non-valuable issues!
Key Collector Comics is a comprehensive database and price guide of ONLY key issue comics: 1st appearances, iconic cover art, origin stories, character deaths, artist and writer debuts, costume redesigns, World War II cover art and many other categories of comics from the Golden Age to today.
In addition, Key Collector also offers price guidance* for each of the 7,000+ comics that comprise the database.
You can read more at the official website or download the app at the above links.
*The proprietary, copyrighted database was a two-year effort of intensive research with each entry manually entered with meticulous care. The pricing values associated with each comic are averaged over a 6-month timeframe of auction sales.