1929 Chrysler 6cyl flathead engine and transmission

I’m restoring a 1929 Chrysler 4 door sedan and want to sell its current engine and transmission. The engine is 84hp, 6cyl flathead in good running condition. The transmission is also in good condition.

A guy has expressed interest in buying, but I have no idea what they’re worth. What do you think would be a fair price?

Thanks for any help you can offer!

I can only offer my experience with a Chrysler Airflow straight-8 engine. In the end I couldn't give it away. It was worth $0.05/lb as scrap.