Roof repair/water proofing price range

May leak sa house namin and since I havent really fiddled with any roof related things, i really have no idea how much and what would be needed to fix the leak.

Basically i hear drops from my ceiling, not sure if may butas ba ang bubong or dahil ba sa alulod.

Anyways, i had contacted this small contractor daw recently and suggested that it needs waterproofing daw and tatapalan ng vulca seal. They had given me a whoopin estimate of 10k labor cost without shouldering the material. Typical camela homes size lang ang house namin, so i'm not sure if this price range is normal lang ba. Help naman guys, kasi di ko sure kung na bubudol na ba ako.