The last time I played they were worth 5 crowns each, and I was contemplating saving them all until they went up in price a little bit. Now it's a few months later, I've got a couple thousand of them, and I find that they're only worth 2-3 crowns now.
What the hell? Is this a bad time to deposit them or something? When are they going to go back up in value?
Maybe...you should have read the update posts by the devs? Like a few months ago?