Doodad Installation/Service Costs

[MarineHawk]

If anyone has any opinions on what it should cost to get the following done, I'd greatly appreciate it:

* Installation of this Pitman and Idler Arm Support System on my H2 ( http://www.trailduty.com/products/cognito/index.html - Cognito says "Installation time is 45 minutes to an hour," but I don't know how accurate that is.);

* T-bars up in the range of 0.8 to 1.0 inches;

* Installation of this rear diff cover: http://www.trailduty.com/products/pml/index.html

* Realignment;

* Oil change w/ Mobil-1 and any normal required lubing.

Just want to know if I'm overpaying (I'd rather hear how much is fair before i prejudice any responses by telling hom much the estimate was).
Thanks in advance.