Warranty doesn't pay much but for customer pay, All Data is the the standard for non warranty time. I just looked it up for a 2009 TSI it calls for 5.9 hours when it's not warranty. $800 doesn't seem unreasonable at all considering you need the water pump, the union (or at the bare minimum 2 seals for the union), 2 new seals in quick disconnect hoses, new seal on the metal pipe that bolts into the front of it, new toothed belt, VW's G12 coolant, and 2 of the 5 screws that hold it in call for replacement each time.