Was this smart or stupid? Also, was this a reasonable price or did I get taken?

First, please please do not say if you did it myself it would only cost X, I promise you I still would not do it.

Here is what I did today at my local Nissan dealership, and I decided to go back next week to finish it off.

Today:
Oil Change
4 wheel alignment
Braking fluid flush and refill
Rear Synthetic Differential Service with installed limited slip additive
Front Synthetic Differential fluid remove and refill
Total Price= $925.17

Next Week:
Coolant Flush and Refill
PS Flush and Refill
Total Price: $437

Total between Today and Next weekend: $1362.17

Two questions:
1) Was the above services a smart move with my car being 13 years old (even though it only has 40k miles)?
2) Was the above prices reasonable at a Nissan dealership?

*Transfer Case fluid service and transmission fluid service has previously been done

 

The average price of a new car is 50K. Does that answer your question? People often get stuck on the cost of a repair compared to the resale value of the car. I tend to lean towards thinking about what it would cost to replace the car.

To be honest, many of those services are pretty straight forward DIYs, but the first set is water under the bridge right?

Maybe do the others yourself?
Coolant Exchange?
https://www.myg37.com/forums/d-i-y-i...acement-2.html

At the same time, replace the upper and lower hoses, radiator cap, heater hose connector and Thermostat. Z1 has everything you need, included OEM parts and coolant.

PS Flush: