Will call eBay tomorrow morning anyway
Don't be in a hurry to involve eBay! Take the advice given by**peaseblossom** and wait and see.
If the buyer only opened a case today and the buyer is now no longer registered they won't be able to escalate the case after three days for eBay to step in. Unless it's escalated eBay won't get inved and the case will time out.
Are you sure that he's no longer a registered member? If you seach for his username on eBay this should be clear. It takes time to close an account so if it's happened quickly he may have been removed by eBay.
However, don't celebrate too quickly. You don't know how the buyer paid eBay so they could potentially still file a dispute through PayPal or issue a chargeback through their credit or debit card provider. This could happen weeks or even months later, so keep all your proofs of delivery and transaction records safe. Don't rely on online records still being accessible in six months time, download or make hard copies of them.
If this happens let us know, as we may be able to offer further advice. Chargebacks are complicated as they are brought against eBay, not the seller. If eBay decides not to contest the chargeback you would be required by the user agreement to accept their decision and repay them the full amount returned to the card issuer - and pay eBay's admin fees for doing so! There's no guarantee you would even get the laprop back.
As a first time seller you've very quickly discovered what a scary place eBay can be to sell anything of value!
