'89 gts corolla water pump

i'll make this simple

does anyone have estimates for about how much a shop would charge to replace a water pump and the belt that drives it in an '89 gts corolla?



this is just for reference-- i'm not looking for shops to do the work; i'm just curious as to how much they would charge so i can set something up.

what about a write up on how to do it? anyone have one, able to provide one, or know where one is?