Trading items isn’t much of a thing in this game, I’m afraid. (By this, I mean you can’t actually do it, not that there isn’t a market for it) There are other places you can get it, though, here’s the list of sources:
https://fallenlondon.fandom.com/wiki/Category:Intriguer's_Compendium_Sources
I got mine with Scraps.
edited by MidnightVoyager on 5/19/2020