Many people will contact you to see if the card is legitimate enough to buy and purchase.  They will then ask you for the number of the card and the security cod in order to check the balance before they purchase it.  Almost all gift cards have a toll-free number on the back to verify the amount on the card.

 

 

With that information they can access the online store for that company and purchase goods without actually having the gift card in their possession!!!!

 

Having an Ebay store and having Seller Feedback is how we Ebayer's show that our items are as stated.  If someone is harrassing you about how much is on your card and believes you are lying then they are probably out to scam you from your hard made money :)

 

Don't be scared of losing some buyers, in the long run you will be making more profit and being scammed less.