(1st Bernie Wrightson): Currently available for ~~~$24.99~~~ $22.49 from eBay - hadleycomics or $14.99 from eBay - hqcomics .
“This original first-print comic-book WILL find a new home... it's all tightly attached, clean and supple and very glossy... a great issue to have, especially if you like attractive copies of important titles of the horror genre.” eBay
Chamber of Darkness no. 8 Dec 1970 Comic Book Review - Facebook
The series is highly regarded by fans for its stellar artwork and historical significance, often receiving for featuring legendary creators like Jack Kirby, Steve Ditko, and Bernie Wrightson. Historical Significance & Content
If you are looking to own physical copies rather than a digital archive, several issues are available through retailers like eBay.