I researched this closely before buying my pickup. The Mopar factory extended warranty can be super but
you have to do the maintenance on time or it is void. Depending upon length you may also have to get inspections to make sure it was not modified (tuner, bigger tires, etc) They even have a lifetime extended warranty on some non-diesel models that is not outrageous in price.
Check this out and compare the quotes from Ziegler to what you paid. I believe you have 30 days to cancel with your local dealer and get the warranty cheaper (???) from Ziegler or just take the quote and make them match it.
Save $$ on Genuine Mopar Vehicle Protection Warranty Plan!
I was also looking at the power wagon but found a steal on a GMC with the 6.0 so went that way instead.