If i could offer a few recommenations:

Make your password more complex it might be a pain in the butt but if you can memorise your password it most certainly can be cracked by a web based password cracker.

Try to make your password alot longer than your previous password try to make it close to the maximum allowed by ebay and make sure your password is completly random and contains letters and numbers which are lower case and upper case and include special characters such as: @_ and others that might be allowed by ebay.

Also you did not mention if you have notified your bank to get your card's canceled and account number's changed?.

This is important because in the password reset options it asks you for the last four digits of your card number and i think you can see these numbers under your account information when you are logged in to your account also this will stop fraud against your account if this is an inside attack.

Also the account thief could of already sold items using your account then deleted all the items so this will stop any fraudulent charges against your account.

Do you also have a PayPal account?

EDIT: Also i forgot to add that you should use different passwords for every service that you sign up for so if your password does get comprised or becomes known to one party they cant gain access over your other accounts.