It's wrong to revoke your offer.
Felicia bought an item from Allison on ebay, however; Allison discovers that a part of her is still attached to the item.
Allison wants to communicate with Felicia.
After explaining her feelings, Allison says she will honor the purchase, but offers Felicia the option to exchange for a more valuable item.
Allison contacts Felicia with a cancellation notice citing issues with the items quality.
Allison gets to keep the item when Felicia agrees with the item exchange.
Allison's feedback rating is lowered when Felicia leaves negative feedback on her account.