The Bundle comes at a perfect time for me, I planned to buy the first volume of Revival, after enjoying the first issue, and I didn't even realize there was a new Walking Dead volume. The $15 price saved me a few bucks over buying those volumes separately and netted a few volumes of other series to try (which will lead to more spending in the long run
I agree it's a weird combination, a great deal for people who are really new to graphic novels, not so great if you already read a few of those series. I guess the top tier is a compromise by offering TWD Vol. 1 for people who want to try the series, and vol.20 for people like me who already have the first 19, but it's been out for about a month already (the rewards of procrastination !) .
Even if this Humble deal doesn't look as popular as other book bundles, if every buyer gets hooked on at least one series it seems like it would really pay off for Image Comics! There's also the argument that people buying the digital copy of a graphic novel will often buy the paper version as well.
I think the captcha is required for below average purchases because some groups were reselling Steam keys from the "pay what you want" games. Having to type in a key makes it physically a bit harder for the resellers to to do this.
http://www.gameinformer.com/b/news/a...ampaign=buffer