ballpark price on lowering

i was wondering if n e one here could give me a ballpark price range, or atleast at what point i would be getting robbed for installing a KYB AGX system. the only place i've looked at said it could be up to $750. thats labor only.
that included installing adjustable front and rear camber kits, which thanks to teal dx, i now know i can do. i was wondering if there was n e more than the camber kits i could do myself with basic tools. i assume i would need a spring compressor and probly more to do it all, but could some one shed some light on my situation? thanks everyone.
