My slappers, I've listened to your feedback so I have modified the drop rates of the Spooky Butt Crate to be now 100% guaranteed to get you a Spooky Butt. My hope is that this will help the event feel a little more fair, while trying to minimize the impact on the market.
As always, you can check the current drop rates in the website. Be sure to force an update with Ctrl + F5.