The only items I can think should be traded are,metal, helium, bloom and iron and this should be traded with another player. So for example my bro who i'm always online with pops up in my fire team chat and start complaining about not having enough metal so i'm like "bro i've got hundreds of that stuff" if we could when at the tower initiate a trade session, we agree on what to trade so in this example i need like 10 helium so we agree to trade 10 metal for 10 helium, we each place the items for swap in the box and boom trade complete, he may want to offer credit for good too? The same could apply to the following but you would need to be in a clan for this to work Shards Exotics etc The point is you trade an equivalent so no one gets scammed.