coconut oil

I had a question about making your own coconut oil versus buying it from the store. Someone told me that the store-bought coconut oil is refined and is not good quality and not good for you, but they said that if you make it yourself it's much healthier. Anyone have any read on this information

what is the difference between the coconut oil I buy from the drugstore that cost for five bucks for a bottle and the coconut oil that you buy from the health food store that comes in a tub. I'm looking to add coconut oil to my diet but want to make sure I'm buying the right one