Are there any conversion factors to figure out how to price stored ear corn based on the price of shelled corn?
Here's a chart, it's older but it might be a start.
http://corn.agronomy.wisc.edu/Management/pdfs/A3410.pdf
I guess it depends on the buyer but I've seen it bring within a few cents of shelled corn at auctions. Usually with the bushel weight adjusted for the cobs but not always done right.