I subscribe to Humble Bundle Monthly and sometimes get keys that duplicate. Selling the following, best offer:
Sid Meier's Civilization V
Duke Nukem Forever
Hacknet
X-COM 2 (just bought this game in a sale and featured in the next bundle )
FS: Steam Keys - best offer
Moderators: GreyWizzard, pilonv1
FS: Steam Keys - best offer
ANATHEMATIC ILLIMITED, TRANSFATAL EXPRESS, VIRAL INCORPORATED, INTERNATIONAL EPIDEMICS & MENSTRUAL MOTORCYCLES.