The constantly flushing toilet, and the leaky sink will add up to a high cost. Not only is that money in the form of higher water bills, but also the leak can eventually worsen causing more damage to the plumbing.
A larger emergency can be even more expensive. Bathroom plumbing especially can develop large problems quickly. No one wants to experience a clogged toilet or a bath that will not drain for very long. Finding a plumber with a professional attitude, and a reputation for customer satisfaction is critical at this point.
Trying to make repairs alone, or with the help of someone 'handy' with plumbing might sound like a cheaper alternative, but this can add up to a much higher cost eventually if the work is not done correctly.
Finding a good plumber is a matter of knowing what to look for, and what questions should be asked. For instance, when calling up and enquiring about a bathroom problem someone knowledgeable should be available to answer questions. Less time is wasted if you don't have to explain the problem repeatedly to several people.
Another important issue is time. The longer it takes a repairperson to arrive, the longer you have to handle the problem without help. Look for someone who can arrive quickly, understands the issue at hand, and will take the time to explain their solution to you.

