Here's an idea what I would pay.
Engine:
If it is seized, scrap value, probably not more than $100.
If it turns over by hand or with a starter but I do not hear it running, perhaps a couple hundred.
If I can see it run, possibly over $500.
If it runs, has been rebuilt recently and there is documentation to prove it, probably over $1000.
Transmission:
If one or more gears do not turn easily or there is other damage that may make repair difficult , scrap value, probably not more than $50.
If it is in generally good, rebuildable condition, perhaps a couple hundred.
If it has been rebuilt recently and there is documentation to prove it, possibly $500 or more..
Lawrenceville, GA