I just had 2 listings de-activated by Ey - why? Because my collages included used postage stamps from Cuba! From the email they sent me: "Ey’s policies prohibit the sale of items sanctioned by the Office of Foreign Asset Control (OFAC) at the US Department of the Treasury. OFAC prohibits any transactions involving items of Cuban origin." So amazingly, I’m not allowed to sell a collage which includes a single Cuban stamp (just one amongst hundreds)!
Well, that’s okay. I was just thinking earlier today that I ought to figure out logistically how to add some of my OOAK items here (previously I only had made to order here, with OOAK only on the dark side). Now, however, I’m happy to be able to offer 2 of my favourite collaged notebooks here on Folksy, where there are - I hope! - no restrictions on used stamps from any random country: