To be honest, no render is ever really perfect right out of the box. You need to do at least a little post work. Even if it's just some levels adjustment or something. Kamilche, it's totally possible that the merchants used the same lights you did but took the scene into a paint program/image editor to "bring out" the colors/contrast a bit. It's just good rendering habit to do this. Perhaps that's why your attempts fell a little short? I don't know. With my models, I try to present them exactly the way they would appear on your screen but not everyone can nor should do this. We're trying to sell you a product, which means we want it to look as good as possible.