Not that I follow anything on FaceBook, but just saw this in passing...
Source: https://www.facebook.com/policies/commerce?hc_location=ufi
Commerce Policy
Items, products or services sold on Facebook must comply with our Community Standards as well as the Commerce Policies. Sale of the following is prohibited on Facebook:
- Illegal, prescription or recreational drugs;
- Tobacco items and related paraphernalia;
- Unsafe supplements;
- Weapons, ammunition or explosives;
- Animals;
- Adult items or services;
- Alcohol;
- Adult health items;
- Real money gambling services;
- Goods, items or posts that we determine may be or are fraudulent, misleading, deceptive or offensive;
- Items or products with overtly sexualized positioning;
- Non-physical items are prohibited on Facebook Marketplace, including but not limited to services, subscriptions, digital products, or rentals.
Source: https://www.facebook.com/policies/commerce?hc_location=ufi

