A CNC lathe's resale hinges on capacity (swing, bar capacity, distance between centers), whether it has live tooling, a sub-spindle and a Y-axis (which turn it into a far more capable mill-turn), the control generation, and spindle hours and condition. Mill-turn capability commands a clear premium.
A plain 2-axis lathe and a live-tooled sub-spindle mill-turn of the same size are very different machines in value. Get a real number for yours at The Machine Blue Book.
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