$100, I'll buy it right now...
On a serious side, what split is this? Is it the Summit split?? Or is it one of the custom jobs that the Blaho's were doing before Neversummer brought them in line? If that is the case, what board is it? Also, is it a regular cambered deck or a rocker/camber deck?
It really depends on what you have. I'm thinking you are at around $400 for a regular cambered NS split. For a rocker camber model, you might be able to push $700. $600 almost certainly.
These prices being that the board is in good shape.