EBay is resuming the bidding after it stopped the auction on Friday because it didn't meet the legal requirements for a charitable listing.
The owner, school board member Ginger Littleton used the purse to hit the gunman's arm.
Even though she wasn't able to disarm him, the purse became an instant hit after the video of the shooting went viral.
Proceeds will go to a charity run by the security chief who shot the gunman before he killed himself last week.
The auction is set to end Wednesday.