Here are two great reasons to get back into Borderlands. In order to get you prepared for the release of Claptrap’s New Robot Revolution on September 28, 2010, two DLC packs for Borderlands are now on sale. Best Buy is offering The Zombie Island of Dr. Ned and Mad Moxxi’s Underdome Riot together for $9.99.

If you own Borderlands on Xbox 360 and are looking for an excuse to try out the DLC that’s available, now is the perfect time. For one week only, Xbox Live Gold members can pick up all three downloadable episodes for 50% off the original price. In Microsoft money, each add-on will cost 400 MS points ($5).

Don’t like the whole “download only” game buying model? Gearbox and 2K Games sympathize with you and want to make sure all Borderlands players, even those without internet access, can enjoy the game’s downloadable content. So on February 23, 2010, Borderlands Double Game Add-On Pack will be released for $19.99. It includes the first two Borderlands add-on expansions, “The Zombie Island of Dr. Ned” and “Mad Moxxi’s Underdome Riot,” that were previously only availanle as downloads.

GameStop currently has two listings for the hard copy version of the DLC. There’s one for the Xbox 360, and one for the PC. Sorry PS3 owners, it looks like you may be stuck buying “The Zombie Island of Dr. Ned” and “Mad Moxxi’s Underdome Riot” through the PlayStation Store.

The price isn’t too outrageous either…