I don't disagree with you on their pricing and think its expensive. On the contrary we are all assuming the intake costs $800 which is not true, it should be the other way around as Mountune already has their intake prices listed on their site for $399. It's really their tune that is expensive haha.
I'll summarize whats been posted so far based on the estimated pricing.
airjor13 mentioned the MP215 kit costs $1300
$1300 MP215
-$399 intake
-$150 for the labor of installing the intake and tune
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$750 cost of their tune
Now if you deduct their tune price from the Cobb tune
$750
-$500 Cobb Tune
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$250
So the question to most people is if the extra $250 is worth it for warranty coverage.