1. Amazing Adventures of Flash Gordon
by King Features Syndicate 
Price: USD 12.59
Dealer: Alibris, ThriftBooks-Dallas via Alibris
Description: Ace Books Softcover Good Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less. 

2. Amazing Adventures of Flash Gordon
by King Features Syndicate 
Price: USD 16.59
Dealer: Biblio, ThriftBooks
Description: Ace Books, Date: 1980. Paperback. Good. Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less.Dust jacket quality is not guaranteed. 1980. Ace Books ISBN 0448172089 9780448172088 [US] 

3. Amazing Adventures of Flash Gordon
by King Features Syndicate 
Price: USD 16.59
Dealer: Abebooks, ThriftBooks-Atlanta
Description: ISBN10: 0448172089, ISBN13: 9780448172088, [publisher: Ace Books] Softcover Pages can have notes/highlighting. Spine may show signs of wear. ~ ThriftBooks: Read More, Spend Less 0.75 [AUSTELL, GA, U.S.A.] [Publication Year: 1980]  

4. Amazing Adventures of Flash Gordon Vol. 5
by Corporate Author King Features Syndicate 
Price: USD 21.58
Dealer: Biblio, Ergodebooks
Description: Ace Books, Date: 1980-12. Paperback. Good. 1980. Ace Books ISBN 0448172089 9780448172088 [US]