whats a stock block worth?

Retail on a bare Romeo block is ~$325, but can be had for $250ish plus shipping (look it up at oemfordparts.com, part #M-6010-W46).

If the block is used, I wouldn't offer more than $200, especially since you may need to do a slight overbore to clean up the cylinder walls.
 
if this one dosent work out i may take u up on that bare block. im just looking to build a forged short block for ~500-600hp over the winter since im pretty sure mines on borrowed time