Have you fully completed the sign up for managed payments,  if not you will never get the $'s, until you do, as Ebay will hold it till they have a verified account to send it to.

Even if you are sign up for managed payments,  as a new seller you will have a 30 day hold on the funds for security.

Your email from Ebay will say if they (buyer) have paid or not.  If the email says they have paid, don't give them the run around and hand over the bike.