I know Sprint 6 was exaggerating, but he is closer to the correct price verses $2000. I think the right number is around $500. If broken into parts, you will definitely make more money than the entire drivetrain. The problem you will have is there is a small population (and I mean very small) out there wanting these motors, many more are pulling them than installing them. This coupled with high shipping is going to kill most deals. Most OHC owners (myself included) already have their motors in hand and don't need another except some parts here and there.

And to answer your question, yes a Ford 300 drivetrain is probably worth more. Many more applications, very reliable and parts are easy to obtain. For the OHC, very limited applications (Firebird and Tempest), can be a finicky engine, and extremely hard to find parts.