Honestly, most repairs to these systems are simple to make and well within the skills of the average handyman. And most repairs are relatively cheap. I haven't spent that much on repairs to these systems on our 2011, but I HAVE spent a ton more than that on improvements. I have a problem with all the toys available on Amazon
I would say the odds are that you will not a $2850 repair in the next four years (that is essentially what the first repair will cost you, even if it only costs the dealer $100). That is also about 15-20% of the value of a 2015 HTT right now, that's a lot of extra profit for the dealer.