1993 k1500 Rear Differential for sale.

I've got a 1993 k1500 3.73GR rear-differential I need to offload. It's solid with brakes, drums and axles. Ready to just bolt right on. It's in the Seattle, WA area. I'd love to have someone pick it up or if someone could arrange shipping I could do that too. Let me know if you have any questions. Thanks-

What size is the ring gear? How much do you want for it?

NOt sure on the ring gear, where would I find this info. It's 3.73 Gear Ratio. I would really like to get $625 for it.