How much does it cost for roof repair?

I had a leak in my home when it pours down raining. A roofer came to cement the part of the roof that lifted. I still see where the flashing is lifted on the corner where it pours in my home. This roofer charged me 0 dollars to cement the roof on one side. Was this price close to cost of repair?

View this post on my blog: http://madeinhome.info/how-much-does-it-cost-for-roof-repair