How much is changing a water pump for Camry V6?

I%26#039;ve been asking around about changing a water pump, but the quotes given by different car repairshops have been very different, some give me the quote of over $500( parts plus labour) but some give me the quote of just $75 plus $140 labour, so what is a more reasonable price, with a reasonable quality?|||the water pump costs about 70 dollars and the time it takes is 3 hrs or less...... look for a price around $225..... thats a reasonable figure