What is the value of an 1899 US 1 dollar bill?

As of 09/2012 approximate prices are:

Circulated: $45 to $150 depending on the bill's condition

Uncirculated: $200

These values may be affected by which Treasury officials' signatures appear on the bills.

DISCLAIMER: The values quoted are market averages as of the date shown, but may be different for an individual bill due to variations in quality and other factors. Also the wholesale (buying) price of a bill will be less than the selling (retail) price. A reputable currency dealer will be able to give a more accurate valuation based on an in-person inspection.