What 's it worth DANA60 ?

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My dad has a pair of dana 60 axles he is thinking of selling andI'm wondering what they might be worth. The are geared the same - 3.55's he was told when he bought them. The front is a high pinion reverse rotation with warn hubs, all brake parts including backing plates are good, and has a sway bar. The rear is complete drum to drum and has e-brake cables. They are still sealed and he is not positive on the ratio. We were going to put them on our cj3a jeep but he's thinking it might be too much work. Anyone have an idea what they might be worth ?
Thanks, Curtis