Why is this so important to ban?
As of the 30th of August
This article refers to people interested magic/spells as "quacks".As of the 30th of August ‘spells; curses; hexing; conjuring; magic; prayers; blessing services; magic potions and healing sessions’ are banned merchandise for sellers, eBay wrote in their 2012 Fall Seller Update.
EBay Bans Magic Potions, Curses, Spells
Budding warlocks and sorcerers will have to go elsewhere for their magical supplies. Ebay is banning the sale of "metaphysical goods" such as potions and spells.
eBay bans sale of spells, potions, magic
Ebay's page stating this ban: