question on blocks and pricing.

just wondering but what is a cleveland block worth today? its a factory d0ae (was hard to see) block std bore, have std stroke crank with it and timing cover/plate. it was run in my brother mustang a few years ago. sold the car rolling and slowly sold some pieces,

also have two, d1ve-6015-AA 429 blocks. ones .030 over ones .040 over. what would they be worth. i know most like and do go with the aftermarket blocks as i had as well, these arent being used rather not have them sitting