So, just bought the crown and it took 8000 units off me but didn’t give me the item. My friend got the same bug, but with the cone hat.
Steam inventory can be slow at times. Rest assured you did get your items, it just might take a little bit for it to display in your inventory. This is something that Steam needs to solve on their end.
The servers are under a heavy load right now due to the Casino, I would just wait and you should receive it shortly.
Edit: Damnit caboose!
Ah ok, thanks!