If you are not familiar with G2A and how it works check my post on them here.
Here is the catalogue with all the Borderlands games and DLCs: G2A Borderlands catalogue
You are only searching for discounted DLCs check here.
Everything about Borderlands: Characters, shift codes, news, tutorials, guides, cheats, farm, glitch and more.
If you are not familiar with G2A and how it works check my post on them here.
Here is the catalogue with all the Borderlands games and DLCs: G2A Borderlands catalogue
You are only searching for discounted DLCs check here.