To start with, let's quickly recap what the Saints Row Expansion Pass actually includes.
Priced at £24.99 / $29.99, the Expansion Pass gets you access to three separate expansions:
The Heist and the Hazardous
Doc Ketchum’s Murder Circus
A Song of Ice and Dust
None of the expansions tie directly into the main story of Saints Row, so you don't have to worry about buying them just to get the full picture. The DLC is more like a series of additional adventures — although the expansions themselves have standalone narratives.
Each expansion can also be purchased separately, but as you'd expect, it's cheaper to buy the full Expansion Pass if you want them all.