I took the car to a repair work hop and he told me that i do have to replace my water pump?

Hello! Sir thank you for you're time ... i have a 1999 chrysler sebring convertible car it has got 1.48k miles on it recently my car is getting heated up i see that whenever i star my car the heat meter is up and is touching the high point. I took the car to a repair work shop and he told me that i do have to replace my water pump from where the water is leaking and he gave me an estimate of $1000 i really wanted to know how much is it going to cost for me to replace the water pump because i am an international student can't really afford to pay such a big amount so sir i request you to do me a favour please let me know how much is it going to cost to replace a water pump in 1999 chrysler sebring ..... thank you for your time sir!