Refurbished Goods is a repeatable miscellaneous mission in Starfield.
Denis has asked me to acquire some equipment from some dangerous people through not entirely legitimate means. He gave me their location.
You used to be able to find the 5 items Denis wanted at the location he sends you to. This quest was broken in the first Bethesda update. It may now take you a very long time to acquire the goods he wants. i..e. I have been searching for Pirate Sniper Helmets for over a dozen levels, having killed nearly a hundred pirates, and have found 3 now. Sad typical Bethesda, this used to be my favorite repeatable quest.
(To whoever wrote the above: No one needs your sad sack editorializing, explain the problem that might be caused after the update without involving your feelings and move on. Typical gamer. Bring back physical copies of Prima Guides, tired of you fools.)