Lodge Mfg. makes authentic cast iron skillets. They are sold many places. They also sell pre-seasoned skillets that are new. I have quite a bit of cast iron and use it regularly. I do season by rubbing with oil and baking on low heat for a couple of hours. I allow it to sit until cool, wipe it out and store it. NEVER put cast iron in the dishwasher. I always wash mine with soap and water for saniltary reasons, put it on a hot burner on the stove to thoroughly dry it and then store once it is cool. I use them on the stove top in the oven and on campfires and the grill. You can't beat good cast iron and it lasts forever if taken care of. It also adds some iron to your diet.
I have one cast iron dutch oven with lid that was a wedding gift to my grandmother. I use it all of the time.