Agreed.
Introversion managed to stay alive through selling their four games for $5 on Steam. That's ultimately not too much better than the current average bundle sale (http://forums.introversion.co.uk/introversion/viewtopic.php?...).
These deals tap into the reservoir of people who aren't invested enough in the games to pay full price (I forget the exact term for that), and these games certainly aren't new, and each has been on sale on Steam at least once so the people who were going to buy for full price likely already have.