Yep, me again..

I was wondering, how much would a water pump job (labor, hour-wise) usually costs?

Since I'm also here, my rad blew, the car ended up being in the red for heat for a little time.. now I changed the rad but the pump seems to be failing (as there is coolant leaking still) Now I was wondering, what else could have been damaged by the high heat when the radiator died away?
And what's around the water pump that could be worth changing while everything is already taken apart?

The car has 165K kms, roughly 102K miles, I think. It's a '91 190E 2.6.

Thanks to all in advance!