SimonG: Piracy is considered bad because it hurts the dev. Paying one dollar on such a bundle is definitely hurting the dev. Therefore it is better to pirate such a bundle and don't pay a low price.
I just find it amusing how people call damnation on pirates but cause more harm themselves due to their cheapness.
orcishgamer: I read somewhere that HIB needed a 42 cent pledge to break even on fees. I don't know if it's true, but anyone paying under a buck better actually be dirt poor, imo, or I'd rather they pirated it too. Screwing over HIB with a ton of 1 cent purchases is the only thing that pisses me off even more.
I personally still don't see the real problem, because it is up to the developers/publishers, they get to decide their pricing model. If they let the customer decide how much to pay, there's no reason to complain if many go with e.g. $1. I guess that's why they are adding certain perks for those who pay more, e.g. an extra game to the bundle if you pay more than the current average price (this was the case in the only indie bundle I've bought so far, the "Humble Bundle for Android" (PC versions included too)).
Piracy is different, there the publisher is not in control at all, hence it just isn't the same.
Anyway, I think I paid around 6€ or so for that bundle above. Since I wasn't sure what to expect about the games, I wasn't sure if I was being too cheap or paying too much.
In retrospect, at least I'm happy I didn't pay more. Of the games included in the bundle, only "World of Goo" feels remotely interesting to me. The others (Anomaly, EDGE, Osmos, Toki Tori) don't feel interesting even as freeware games, the little I've tried them. They feel about the same as some old mobile games on my old Nokia phone. So for me, maybe 6€ was about right, or even too much, for that bundle. I guess I got it mostly for World of Goo, as I had heard some good things about it.