Sometimes the value to us is sentimental and we must decide to put a value on that. I collect certain things and sometimes pay more than what would be considered "market value" (whatever that means) because I am willing to pay for the happy memories, sentimentality, etc. But this is still something that I must decide in advance. Rarely do I ever change my snipe amount and the few times I have it is, as someone suggested, a reflection on the item's value to me, rather than current bidd amount.
