A skillet has the same functionality and design as a frying pan. Some cooking professionals are more likely to use the term skillet for cast iron skillets. Skillets and frying pans are two terms that are often used interchangeably, and in most cases, they refer to the same type of pan. 

Both skillets and frying pans feature flared sides, flat bottoms, shallow depths, and no lids. When you need to flip food, high sear, grill meat, or shallow fry, then the skillet or frying pan is an excellent vessel for the job.

    As for the price of cast iron grill pan, it can vary depending on the brand, size, and quality of the cookware.  While there are affordable options, investing in a higher quality cast iron grill pan can provide longer life and performance.

Versatility and Culinary Capabilities:

They have a single, long handle, like fry pans, but also usually feature a smaller side handle to help the cook lift the added weight of more food. Saute Pans also usually come with a lid designed to hold in moisture. This makes them much more useful for slow cooking with sauces.