I think genuine DLC where its obvious theres time & effort put into it which wouldnt happen if it wasnt paid for after release, most people are fine with it.
I suspect most people will feel they can trust gearbox on this, having seen what they did last time, and at £5 a pop, and i guess we can assume individually they'll be £8 if the accidental listing this week is anything to go by, a fiver isnt all that much and theres easily 5-10h worth of entertainment in them, so its not hard to justify, even if £20 before the games even out seems pricey.
I hope theres no Underdome Riot type DLC this time though, they feel more like side-missions, rather than proper DLC packs.
Im also furious, having seen Torchlight 2 is being released on the same day. They just couldnt give it a week or 2