Price of a fuel pump installation ona 2001 Pontiac Montana Van ?

Hi...............Need someones help. We have a 2001 Pontiac Montana ext van, that we bought new and have maintained all along.This week we got a service engine light and then the car would not start. Electical was good, battery fine, tank full of gas, but engine would not turn over. AAA came, checked it out and could not get it to start. Checked outside fuse, but not inside fuse. Car was towed to Repair shop and just got word the fuel pump is locked up and must be replaced. What should the cost be for this 3.4 liter engine with 129,000 miles. thanks for any help.