How delete ebay database files

1. Log out of these sites if you are logged into.

Note: Shopping and notification sites

Empty the shopping cart/ bag.

Log out of the account.

2. Delete Databases and Local Storage items

Backup your Mac.

Quit Safari.

Hold the Option key on the keyboard down and click the “Go”menu in the Finder menu bar.

Choose “Library” from the dropdown.

Scroll down the list.

Click open the Safari folder.

Scroll down the list and click open the “Databases” folder.

Click open the “IndexedDB folder”.

If you find the items there, right click and choose “Move to Trash”

or select all and move to Trash.

Scroll down the list and click open the “Local Storage” folder

Right click the items you want to remove and choose “Move to Trash”.

Restart your Mac, launch Safari holding the shift key on the keyboard down and test.

3. Delete Cookies and Website Data

Safari > Preferences > Privacy > Cookies and Website Data...:

Click the “Manage Website Data” button.

Remove All Data except ones from Apple, your internet service provider and banks.

Quit Safari. Relaunch Safari holding the Shift key down.

Repeat the procedure again. Restart the Mac.

As the 2nd article points out, they are capable of regenerating after deletion with files that go to many parts of the system.

Safari/Browsers – can’t delete cookies

Evercookie

The myth of the dangerous cookie

In add-on to what dominic posted, go to Safari/History and delete any entries for the related websites.

You are welcome.