Diesel injectors

[wtretrievers]

Anybody had injectors changed on their diesel?
I just took my truck to the dealership, it's a 5.9L Cummins & they are telling me all 6 injectors need changing at a cost of $5300.00!!!!! Yea you heard me!!! $5300!!!!! I liked to have fell out my chair!
Here's the deal, it had a 100k mile warranty at 50k they changed 2, at 80k they changed 2 more at 96k they said I have 4 bad but would change all 6 before my warranty ran out, it now has 130k & they are saying all 6 are bad! WTH???? That would be 16 injectors in a 130k miles! I personally think they're full of #%^*!
Where ya at Capt D? Had any of yours changed? Or anybody else? That price sound right?