Upgrade Finder: Zereth Mortis

I’m confused about this category of upgrades. I thought it would include the gear sold by Rafiq in Zereth Mortis but none of the gear he sells for Sandworn Relics appears on the list of 246 gear. Is this listed somewhere else?

In the options, make sure to check “Sandworn Gear” and it should show up.

Thanks! I completely missed that.