Cost to replace radiator in 1998 Honda Civic EX?

Cost to replace radiator in 1998 Honda Civic EX?
Sorry, don't know the engine size.4cyl?
Small accident today on the freeway. Resulted in a lot of damage to my 1998 Honda Civic EX (2 Door/Manual Transmission/86,000 miles). My front end went under a pickup truck going about 15 mph and it crushed my hood. I started leaking green fluid, dude told me me it was radiator fluid and the car is close to overheating. I pulled off the freeway, temp gauge would not go down. Pulled into an auto repair place and the guy "cooled down" the engine by pouring cold water in the radiator cap. It started leaking out the bottom and we realized the radiator was damaged and leaking. He told me to blast the heat to finish getting home, which I did, and the engine temp was fine for the next 30 miles.  It looks like I need to get theradiator replace altogether. Or do i? Any ideas? And I would LOVE if somebody could tell me the basic cost to replace it before I head out to a repair shop tomorrow. That way I don't get completely ripped off. HELP! THANKS SO MUCH! /Rich