eBay

On two books I am trying to list, Ebay's entry page says the book's ISBN's number is invalid even though it is correctly entered. Since Ebay thinks it is invalid, it won't let me enter the books. I tried 3 times and made sure it was entered according...

Can we offer a % discount for everything In a store (that I own)? I do no see any help for that. I did this before and had some success. They mention on seller pages but not 'how To"Thanks

Never had that happen before and I have sold hundreds of books on Ebay

Customer thinks I have a list of buyers that I can notify when I list a book. Sounds like a good idea, but I know nothing about it. Not sure Ebay will let me contact a buyer without a transaction.

I am a seller and the buyer says package wasn't delivered. Fed Ex says it was. Have tracking ending with delivery that says left at the door. Ebay is telling buyer I will need to refund. Ebay has wording that seller is responsible unless seller can p...