@heavanet- I hate to tell you, but marble is not always the most durable surface, especially for a table that is used frequently. I had marble bathroom counter tops in my previous home, and I accidentally chipped them several times over the years. White marble also has the tendency to stain.
If this coffee table will be mostly for looks in your home, you should go ahead and buy it. However, if you plan to use it frequently, you probably should choose a table made of a more durable surface, such as slate or hardwood.