I'm not buying the loving GOTY edition, I only want 3 loving packs.
Well obviously that's not working out for you, huh.
You're either going to have to buy them for full price from Bethesda, or buy the GOTY edition.
Stop being a stubborn ass and get the GOTY edition from Steam.
Unlike the disk version, losing the disk will not prevent you from playing the game.
And you'll also have all of the DLC..