https://www.pcgamer.com/borderlands-3-has-a-season-pass-and-multiple-editions-including-a-dollar250-chest/

Borderlands 3 won't launch on Steam, but everything else about it is typical for a big budget PC game release, which means that of course there are four increasingly pricey editions to chose from. 

The standard version will be $60, and just includes the game, though pre-ordering any edition gets you "gold weapon skins" and a "weapon trinket," which is presumably a trinket one puts on a weapon.