broken bolt

Well... This car is going to be the death of me, I swear. While doing my oil change recently, I noted signs that the transmission may be leaking from somewhere on top. I remembered reading that the shift tower can leak, and is a fairly simple fix. While I am at it, I figured I might as well...

im workin on a 1987 5.0 mustang and the engine is still in the dog house and i started workin on it cause i just bought the car and it had a broken water pump bolt and it was leaking antifreeze from the passenger side aka where bolt was broke off in block at well ne how i got the fan out and all...

How much should I expect a shop to charge me for removing a broken bolt from the front of my engine? There is a piece sticking out about a 1/4 inch but I can't remove it myself using any prescribed methods. Just trying to get an idea so I don't get screwed too bad. Thanks.