The value I place on a gift card bought online has to be adjusted for trust and convenience. If I'm buying an Amazon gift card online from Amazon, I will happi

The value I place on a gift card bought online has to be adjusted for trust and convenience. If I'm buying an Amazon gift card online from Amazon, I will happily pay $100 to get a $100 gift card. If I'm buying an Amazon gift card from someone on ebay, of course I'm not going to pay $100 for it. Why would I when buying the same card from Amazon would be far more convenient and Amazon has proven itself far more trustworthy to me than any random ebayer? However, this reduction in value due to a decrease in trust & convenience says nothing about the actual value of that gift card to me or the receiver. I'm simply trading some increased risk of being ripped off for some of the cash value of the card.