This! (and your prior post).
I also feel that their aggravating pricing model is the cause of a lot of hostility toward IR (myself included). I'd also gripe that they let their prices rise way too fast (compare/contrast IR first-hour to HIB-BTA first day). Also IR doesn't drop in price appreciably over the course of the sale (whereas HIB-BTA & IG prices fluctuate up and down).
Humble Bundles don't fluctuate much after they get to $5. They're actually very similar to Indie Royale, they barely drop any after that point. The Humble Weekly deals tend to be lower priced though, but even those don't really fluctuate much.
Indie Gala is kind of hard to compare, if you're serious about getting the cheapest price, you can almost always join in a happy hour group buy and get a full bundle for $1.50-1.80.
EDIT: Damnit, Fox ninjas me and makes me look stooooooooooooopid.