I did not know!
Drugs and Drug Paraphernalia
Narcotics, steroids or other controlled substances may not be listed on eBay.
Drug paraphernalia may not be listed on eBay. Such paraphernalia includes all items that are primarily intended or designed for use in manufacturing, concealing or using a controlled substance.
Violations of this policy may result in a range of actions, including:
Listing cancellation
Limits on account privileges
Account suspension
Forfeit of eBay fees on cancelled listings
Loss of PowerSeller status