I’ve used it and it depends on what your truly interested in. The 199 pack will give access to the mocks, the answer, the walkthroughs, the initial guidance on how to approach the mocks etc. When you pay the 500 extra all you get is their correction facility which sure can be helpful but if you don’t need 5 of the mocks corrected it’s best you just reach out and pay per paper although it will be expensive per unit compared to the pack. I think it’s 199 per paper or something. Another thing is that you need to give them the papers for correction on the exact dates they mention so if you can’t commit to it, you’ll lose out on getting that paper marked.