On my view crowns will go up to 10m ~, and then will crash. Why i think so ? Many people who bought of sythe, and just merchers who stocked on them, will get rid of them. You never know when it's going to happen, so i suggest keeping offer for max in ge, and after you get it , you will know they are about to crash.
About mints its different story, mints were at 50k~, and been used to trade rares not to make massive profit. So crowns will be dumped soon.