humm not sure how that would work, id just get one of those hide a key things. not exactly sure why u wont buy off ebay. they have killer deals on there. buying things on line now days is safer then giving your info over the phone. plus if you use paypal to pay your protected by them and your bank. i buy things all the time off there and have had zero bad experiances. normally it will be when your selling something or when buying something that is WAY too good to be true that you will get scammed. but a 7 dallor part, your safe.