It depends on the country i suppose. Coz over here in my country they have a system that if u are registered with them (filling up a form with ur name, details etc etc), whenever u make a purchase @ the mac counter, they would key your purchase into the system so u can keep track of what u have buy in case u lost the item and need to repurchase the same item again... i m not too sure if this system is in place @ other mac counters in other countries though. So i guess it varies from country to country? Maybe u would like to check with your local mac counter to see if have this system in place first?