It depends on your mileage. I have a policy that gives me, on my 2002 S w/ 40,000 miles, a 5 year, 100,000 additional mileage policy for $2,600. Your quote may differ. I got my policy - after speaking with most available company's - from Direct Buy Warranty. It's their Platinum Plan. With zero deductible.
My agent has helped several forum members get a comparable policy. You can see their policy, essentially a comprehensive policy with a few exclusions here:
https://www.directbuywarranty.com/pd..._agreement.pdf
Then if you're interested in a quote my agent is: Adam DAvis, at 1-888-865-4484, ext. 8819. Obviously, but I'll say it anyway, I have no connection (other than being a customer), no interest or association with Direct Buy Warranty. For what it's worth, you can tell him I told you to call. He'll do what he can to get you a great policy. That said, you have to do your part. You, of course, have to maintain the vehicle per factory maintenance schedules to maintain your coverage. Just like with the new-car original warranty. Happy shopping.