2002 Chevy Cavalier Headgasket - $2000 - Please Help

I took my car into the shop last night and they said it weill be $2000 to repair the headgasket. It involves sending the part to a machine shop adn a whole bunch of labor to put it back in along with a Thrmostat, Cooling system flush, spark plugs, and oil change.

I thought that my windshield wiper fluid was low, but it was the anitfreeze/coolant. Sigh. I had the car checked out when I bought it and the mechanic has said there may be a leak in the water pump, but time would tell. It sounds like that is what lead to my problem.

Any advice or direction would be appreaciated. Should I fix the car, is there a cheaper solution?