2018 MARKET UPDATE: KID FLASH NOT A FLASH IN THE PAN
Teen Titans have been hot for a while, and Kid Flash is one of the founder members.
There is downward pressure on prices in lower to mid grades, but this book still has plenty of staying power above VF. It's pretty scarce in that shape too.
2017 MARKET UPDATE:
How do you spell "under-valued"? This is yet another of the Silver Age key issue comics that just never seem to make up ground on the more popular books.
It's seen respectable price increases, which is why it's moved up from last year's lowly position, and there is a lot of fuss about all the Teen Titans characters. Movie rumors won't go away.
Two for the price of one! Not only does the atmospherically-charged super-villain, The Weather Wizard, make his first appearance in this book, but more importantly Kid Flash (who later appears as one of the Teen Titans characters) also makes his bow.
Teen Titans are hot due to (you guessed it) movie hype. The team's first appearance in Brave and the Bold #54 appears at #98 on our Hot 100 list.
Add to that the complication that this is a relatively scarce Silver Age book, especially in grades above VG, and you will conclude that Flash #110 is probably a good investment bet.
Other Flash books on the Hot 100:
Showcase #4 | Flash #105 | Flash #123 | Flash #139