http://www3.interscience.wiley.com/journal/119670037/abstract?CRETRY=1&SRETRY=0

Found you answer although I will not have time to search more for sources. According to the website above Lincoln planned to pay $400 per slave for a total of $1.6 dollars. The actual value of the slaves was $4-6 billion.

I do recall reading that Lincoln's value per slave being one of the complaints of the slaveowners. Thought I had saved it and posted it to SHAPE but I cannot seem to find it in my archives.

Also of interest and I think this is related:

HON. MARTIN F. CONWAY "Millions for freedom but not one cent for slavery"

His entire speech is here, http://www.kancoll.org/books/cutler/eraop/era-of-peace-p44.html.

Another point I would like to make about this speech, this is the first time I have read an offical sppech on the floor of Congress where the term "war" was used to describe the conflict.

Another point of interest is the "Not One Cent" coin. I found this website, although the introduction to the website says this is how Lincoln felt about compensated emancipation, we now know different.

http://historical.ha.com/common/view_item.php?Sale_No=86111&Lot_No=90010&src=pr

http://www.coinpeople.com/lofiversion/index.php/t23024.html

Now back to Fort Sumter research.

GP