Looking for help with 2 Transformers

I am looking for some help with selling two generation 1 transformers. Both are loose, I realize that "in the box" units are worth the most. I have a generation 1 Optimus Prime that is out of the box but is COMPLETE and does not have any broken pieces. I also have a COMPLETE Jetfire that is in the box, I did open the box and play with it when I was a kid but all the parts are stored in its original box. I am the original owner of both, if that makes a difference. Can someone give me an idea or point me in a direction to find out how much these are worth? I have detailed photos I can email or post if it helps. Thanks in advance for the help.