If you are reasonably mechanically competent you should be able rebuild your rack yourself. The hardest part is pretensioning and locknutting the two adjustable parts.
I spoke to steering place and it sounded like in a manual rack about all they do is strip and clean it, linish the shaft, regrease and reassemble it, then set the preload on the pinion seal and pinion-> rack.
Doing everything bar linishing the shaft is possible at home. The only replaceable parts I think are the bushes at either end of the rack body, and mine seemed fine when I checked them.
You can also try tightening the preload of pinion onto rack with everything still in your car. It's the big hex socket on the rear driver's side of the rack (it has a funny shaped locknut too)
Hen
PS - make sure that it is your steering rack giving you the problems, not worn balljoint, rack ends, tie rods or wheel bearings.
