From The Collaborative International Dictionary of English v.0.48:
Valuation \Val`u*a"tion\, n.
1. The act of valuing, or of estimating value or worth; the
act of setting a price; estimation; appraisement; as, a
valuation of lands for the purpose of taxation.
[1913 Webster]
2. Value set upon a thing; estimated value or worth; as, the
goods sold for more than their valuation.
[1913 Webster]
Since of your lives you set
So slight a valuation. --Shak.
[1913 Webster]