I really don't think it is worth it,,,,but the dealer sure does.
I went to the NSD website,,,and in the first sentence it says " NSD products designed to increase your profits ".
That sounds like an increase of the dealers profits.
Exactly how much is this package ?
For about $ 30.00 dollars a year,,AAA insurance offers a roadside assistance plan.
The 5 largest insurance companies provide the glass and dent protection as part of comprehensive coverage ( required on a lease / new car purchase ) Average rate $ 25.00 a year + your insurance premium cost.
Quite a number of nationwide tire retailers will warranty your tires on a new car,,even though they did not install the tires. ( America's Tire and their affiliate stores )