While you can easily get a refund, and item has to be returned at sellers expense, you will get a nasty shock if you open and use a private account for selling.
Ebay may say private sellers sell for free, but exposure to buyers appears to be minimal unless you pay for promotions, which even then is poor compared with a few years ago.
You will also have to learn about Simple? Postage which has not been forced on Business Sellers.
The fun of selling on ebay has disappeared over the last few years.