Found an archived thread on the topic of not being able to trade/sell Cash Shop items in the game, here:
https://forums.ashesofcreation.com/discussion/comment/136458#Comment_136458
Was wondering if - just maybe there were certain restrictions on them - that maybe a "Wish List" could work?
What if we had the option to place something like 1 to 3 specific items on our Wish Lists that other players could gift us, but only after they'd been on our Wish Lists for a month+?
Or would this still possess too much potential for exploitation and gold-trading/selling?