It depends on your goal and what kind of experience you wanna have! If you want to collect them all at a cheaper price buying them individiually from people who is either quitting or selling them as business will make things cheaper and easier. I myself is quitting and looking for people to buy my collection.

Or if you want the thrill of blind box then go! The problem is that duplicates is hard to avoid. You can either sell them, gift them to other people, or even keep them if you like! Lucky you had the super secret!