Is it a good deal? I'm being serious, not a smartass.
Here's about what I paid for parts when I replaced my clutch.
Master Cylinder: Around $100 "VPA"
Slave Cylinder: A little under $300 "VPA"
LUK clutch kit: Under $200 "Ebay" (This is the OEM clutch)
I don't know what you mean by "valve", but even replacing all of the above on mine only comes up to about $600 in parts. If the dealership gives you a comfort factor, then whatever the savings going elsewhere might not be worth it, but I would look for the parts myself. Then find a competent shop to do the work. Replacing a clutch is replacing a clutch. The real PITA is bleeding the clutch, but a mechanic with a manual can figure it out.