Borderlands 2 GOTY PC Digital Download $19.99 @ MacGameStore

*sorry if repost, I can't seem to figure out how to do an advanced search on here like I'm used to doing since the change*

Macgamestore Link

This will be a Steam code, which activates on PC or Mac.

Borderlands 2 Game of the Year Edition offers more value than ever before - over $100 of content and includes:

• Critically acclaimed title, Borderlands 2
• 4 Add-On Content Campaigns:
  Captain Scarlett and her Pirate’s Booty
• Mr. Torgue’s Campaign of Carnage
• Sir Hammerlock’s Big Game Hunt
• Tiny Tina’s Assault on Dragon Keep

[*]2 New Playable Characters:

• Gaige, the Mechromancer
• Krieg, the Psycho

[*]Ultimate Vault Hunter Upgrade Pack 1
[*]Premiere Club Content:

• Gearbox Gun Pack
• Golden Key
• Vault Hunter’s Relic

[*]Collector’s Edition Heads and Skins
[*]Creature Slaughter Dome

Click to expand...

And since it's usually asked, you are essentially missing the various Skins/Heads, Ultimate Vault Hunter Upgrade Pack 2 and the Headhunters packs (which are $2.99 packs that are fairly short that feature a few sidequests and a boss fight that rewards you with a themed Head/Skin as a reward).