Idols for Oswald unintuitive

It took me a very long time to figure out you can sell these Idols to Oswald. The item does say that you can exchange them with Oswald, but I wouldn't expect a quest item to be sellable. I was instead wondering why Oswald had no dialogue about them, and wondering if maybe I needed to collect more of them before I could continue with that.

Some dialogue is probably a good idea here. Either to hint at the player that you need to sell them, or to just take the lot of them off you and give you the gold directly.