Have you ever wanted to own practically every piece of Borderlands content ever produced for PC? What an amazing coincidence!
The Humble Borderlands Bundle includes Borderlands and its main add-on DLC for the amazing price of whatever you care to pay.
Cough up more than the average - $5.71 at time of writing - to get the same package for Borderlands 2, plus a 75% discount on The Pre-Sequel and more content to be announced soon.
If you pay $15, you'll also receive a pile of extra Borderlands 2 DLC and a 2K merchandise discount voucher. The only thing missing from this pack is DLC for the Pre-Sequel, I think.
As usual, you decide how proceeds are split between publisher, organisers and charity - in this case, the National Videogame Museum.