what are these parts worth???

If you really intend to sell this, I would suggest NOT boring at this time but have the block sonic tested to make sure it can be overbored to .040" and make that sonic test result part of advertising it.

The reason: The actual finished bore size will depend on the actual pistons used. Example: If you bore/hone for forged pistons, it will be a larger clearance than for hypereutectics. I doubt that any decent shop bores without the final pistons in hand.