There is no fast way to properly assess this many knives. Value is based on pattern, handle material, age and condition. Each knife needs to be shown with blades open, 2 pictures, front side & back side, with camera directly overhead.
If you post these pictures here (a few at a time or people might feel overwhelmed) knowledgeable collectors will be able to give you an accurate price range for each one.
Also, as you open and close blades for pictures make a note of any blade that does not snap open or snap closed. Also make a note if any blade can be wiggled side to side when open (blade play).
Make note of no snap or blade play under appropriate picture.
Sounds like a lot to do, but once you actually start taking the pictures it goes quite quickly.
Alternatively i'll give you $500 for the lot.