What is a st16 worth?

Hello i just traded into a st16 with a sickle mower, belly mower, turning plow, cultivators, and grader blade and have no idea what its worth. Any help is greatly appreciated.

I have purchased two in the last ten years, one for $20 and one for $250.
The second one is more realistic. It came with a 36" snowblower, a snow plow, a 48" mower deck two sets of wheel weights and chains. It didn't run but the fix was free. It is my most dependable unit at this time.