value of transmissions

Hello all. This weekend i pulled my tranny from my Dart and now I got two laying around.

I got a 904 from a 71 /6 Dart and a 727 from unknown vehicle. My '69 Dart was a 4 speed originally and will be again. The previous owner swapped in an auto and I don't know where it came from.

So, what is a fair asking price for these? I got a small garage and need the space. If anyone on here is interested let me know...