According to Wolfram Alpha, the weight of your average human being is 70 kilos.
According to the same, 70 kilos of gold are worth some 3.6 million US dollars.
According to the EPA by the way of xkcd, the pencil-pusher estimate for the value of a human life is in the range of 8.4 million US dollars.
Hence, a human being is not only worth its weight in gold, but more! The average human being is worth a little bit more than twice its weight in gold!
(Note that if you weigh 160 kilos or more, you should be exchanged for a gold statue of similar weight post haste, before the sentimental types notice.)