on 01-09-2014 07:06 AM
if you do click buy it now accidentially.. then you just back out and DO NOT click the CONFIRMATION button
however if you clicked buy it now, and then clicked CONFIRM you have actually purchased the item and you need to pay for it or contact the seller and see if they are willing to let you cancel the transaction. if they do not then you can get a strike against your account for non payment
if you get 2 strikes for non payment you may find you cannot buy much on ebay as many sellers block non payers
ebay have a 2 step buy / confirm so that you cant accidentially buy