I have been trying to sell a complete set of Assassins - including all 10 ultra-rares and both promos - for a while now. It's all in good shape aside from a minor crease on one ultra-rare. Here is it on eBay, with pictures:
https://www.ebay.com/itm/394312158833
While I'd prefer to sell it as a set, I would certainly consider offers for individual ultra-rares and promos or the remainder of the set. (I don't think I'd want to sell any other cards individually.) I would be willing run such transactions through eBay if desired.