How much do cars really sell for at police auctions?

I’m looking to buy an suv in decent shape that’s a max of 5 to 6 years old. How much can I reallistically expect to pay for it at auction? And if someone knows a site where I can look up police auctions in the Durham NC area, that would be helpful also.
I’m looking for a ballpark estimate, not an exact price. Also, I’m an over the road trucker driver and don’t get home except a few days a month so going to the police station to ask is not really an option.