What is safe to trade?

[RasaNova]

My inventory tabs for "notable" and "other" get filled with a lot of things that don't seem like they have a use, but several items in the same category definitely DO. Does anyone know what should be saved?

Extractiums, Multikeys, and Machine Rite Sets are obvious (at least, after playing a bit. I don't remember if the functions of these were explained at all, at least before we meet the traders.)

What about the less obvious stuff? Such as Empty Soul-traps, Ancient Machinery, Power Cells, Rechargeable Batteries, all the bits of jewelry etc that go in to inventory instead of cargo like most of it. I'm worried I'm going to give away a stack of something as priceless as Extractiums that I'll need later!

[REhorror]

Basically the low-tier weapons & armor & grenades you get from mooks. Those are the safest because you can endlessly farm them.
Just don't make them automatically add them into cargo because it can screw you in Act 3.

And always leave a cargo or two (of every variety) in case of something. Be smart, don't sell everything you have just because.

[Kid Gloves]

If it has a purple border, it's for trade. All those things you listed are trade-able.

[RasaNova]

Originally posted by Kid Gloves:

If it has a purple border, it's for trade. All those things you listed are trade-able.

Oh wow, I never noticed that! The border barely shows up on my screen but yeah it's there. That's exactly the info I needed, thanks! Now maybe I can finally get the fellowship of the void to like me enough for that colony project I want...

[corisai]

Just keep at least 1 stack of each class of items in your Cargo in case of ... need.

P.S. I don't remember that Heretic or Xenos Trophy are used somewhere but I don't played the Heretic.

[almightykingbob]

The items that are can only be cargo are just fluff. What maters more is the the category. Some events special events will let you trade provisions or fuel for more valuable cargo, special gear and even profit factor. Don't know all the events yet so to be safe I have been hording a least a couple of each type just in case.