2018 MARKET UPDATE: THE EYES HAVE IT, JOCK
Surely the bubble must burst on this book... But Detective Comics had almost run out of steam before the relaunched New 52.
Based on the few copies in the CGC census, print runs were low. There are only 426 in the census. That's low considering it's a book published in 2011.
2017 MARKET UPDATE: NEW TO THE LIST!
I had never heard of Jock before I became aware of this amazing cover.
Joker is the hottest character in the Gotham universe at the moment, even hotter than his girlfriend Harley Quinn, and this cover, featuring the clown prince of crime with a face made up of bats and the Bat symbol, will endure long in the memory.
Add to that its very very late in the original run of Detective, when print runs had declined, and you have a scarce, in-demand book. Stick to CGC 9.8.
Other Detective Comics issues on the Hot 100:
Detective Comics #140 | Detective Comics #233 | Detective Comics #359 | Detective Comics #400