The main difference in cast irons which will usually be indicated by the cost of the cast iron is how much seasoning the skillet has received already. u003cbr/u003eu003cbr/u003eIf you do not know what seasoning cookware means, this is when you have to add an oil finish to your pans so they will become non-stick and you are able to cook with them properly. u003cbr/u003eu003cbr/u003eFor a cheap cast iron, you will need to add this seasoning to the rough surface yourself, however, if you have an expensive cast iron, usually the seasoning will have been done already!