Jailbroken carrier unlocked iPhone 6S 128GB iOS 10.2 what’s it worth?

Apologies if this is the wrong place to ask, but my new iPhone X finally arrived, and it’s time to sell my jailbroken / unlocked iPhone 6S. It’s in great shape, has a new Apple-installed battery, and is running jailbroken iOS 10.2. I have an idea of its worth.
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