Hardwood floors are indeed very beautiful and elegant to look at. But over time, after considerable foot traffic, even hardwood floors start to fade out. The topmost layer of the floor starts to deteriorate and the shiny look slowly goes away. This is when you need to call in for professional hardwood refinishers.
Hardwood refinishing is the only way to pour life into your otherwise dull floors. Some people tend to delay or avoid the much needed hardwood refinishing for a long time and simply cover the floors with carpet. However, this will not solve the problem; and if nothing else, it would only increase it. The lesser the damage, the lesser it would cost for you to go ahead with the hardwood refinishing. If you simply put it off for another day, you are only increasing your burden.
A less damaged hardwood does not take a lot of processing. It could be refinished with a simple screening and coating job. On the other hand, a badly damaged hardwood would take sanding and more than one coating. If you intend to change the look with a refinishing job, then it would cost you a little more, but will certainly make the space look even more aesthetic.