If you take it to a gun show, be sure to put a zip tie around the lever to the stock. Otherwise, everybody and his dog will have to "work the lever", just to make sure it works. I sold 8 94 unfired commemorative carbines at recent shows. I also had little cards "Please ask to handle this rifle" on each one. I was happy to remove the ties for people. There are some people who are ham-handed, and don't seem to care about banging the firearms into each other.
I have never had trouble selling a 94, pre- or post-. I've had a couple of really nice pre-64's that were sold without any haggling. One fellow told me he had always wanted a nice 94, and he found it.
For a mint, unfired 1957 94, $800-$1000 is not unreasonable. Nice find!