Yeah, I was surprised about that as well. Minis (post BMW acquisition) are always in the "fun to drive/expensive to maintain" as described by car mags. It was my understanding (when I purchased my 2012) that all maintenance was included in the purchase price (through 36k miles).

I purchased the "extended maintenance plan" (increasing all scheduled maintenance from 36k to 60k) on my 2012 for $2500 and have only paid an additional couple hundred in maintenance since then.

I'm not counting tires - which I have spent quite a bundle on due to having both summer and winter tires and wheels for my vehicle.