Too much.Beware used pumps that have sat around for a while. Unless they are kept full of fuel or ATF, the internal vane pump will gum up and it will be useless to you.A rebuilt Bosch VE injection pump should run you around $600 installed, so figure $400-450 (US) for a DIY.The vwdieselparts.com site lists a "remanufactured" injection pump at $695.00. They are usually 25% to 75% overpriced on eveything they sell, so maybe this gives you an idea?