2018 extended maintenance plan costs
 

I have a 2015 countryman and am wanting to trade it in for a 2018. With the change in Mini's service protection I was looking at buying an extended maintenance plan. I drive a lot of miles and need service about every 3-4 months. I can't find any costs of the extended plans- I know dealers like to surprise consumers. I am wondering if anyone has gotten a cost on the current extended service policy or have an alternative source for such a plan.
Thank you in advance for sending me any information...