my brother do not worry I'm seller too in ebay and that is my shop in ebay
http://stores.shop.ebay.de/smartphone-24__W0QQ_armrsZ1
nothing will happen as soon as you send the Item back to the seller with tracking nummer )but you have to pot the tracking number in paypal case.thhe paypal will refund you the money and case will be closed.
My friend believe me the buyer in ebay like king,seller has no right.
do not worry you will get your money back you have to thank paypal.