I get that price drops and sales are just a part of video games. That $60 AAA goes on sale for $40. Later the permanent price drops to $30. That's just how it is... pay a premium when it's new, or wait for a sale or price drop.
What I strongly disagree with is a 50% off sale on Steam on over $200 worth of base+DLC, _knowing_ you're going to do a Humble Bundle _NEXT WEEK_ and offer that same game and DLC for $20. Capturing that Steam wishlist $$ before the Bundle.