I was getting the check engine light checked out at my local(at the time) dealer(under warranty), and they asked if I wanted my cabin air filter replaced. I asked how much, they responded with 140 dollars! I said I would think about it, and since I had my computer with me, I checked out the the price online and ordered one from amazon for ~16 bucks.
A little while later, a bunch of us getting service done were chatting about various services. I had mentioned the crazy price they just tried to charge me, and this older woman (60+) lost all the color in her face and said, "I had them do that the last time I was here".
And I was so angry I left a horrible review on Yelp(among other reasons), and have never been back to that dealer since. Stay away from MetroWest Subaru in Natick, MA.