For me, a premium course would be something very 'specific' and 'thorough'. It should teach you something that most courses don't and it's not in the sense of being 'premium' per say but perhaps, it teaches something that you've never heard of and can quite be super useful for the topic that you're learning and would likely use it in professional work.
I agree with you, that a course should cover things that are useful for your professional career.
Thanks for sharing your opinion @maramccrann.
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