Is that the same one that was on the stanford edx clone site? edx seems to be putting more behind a paywall and jacking up the price in a way that's pretty dis

Is that the same one that was on the stanford edx clone site? edx seems to be putting more behind a paywall and jacking up the price in a way that's pretty disappointing. That one is what $150 for the computer to tell you if the numbers you typed in some boxes is what was expected, for example. I mean, looking up the answer in the back of the book is worth that? The certificate is worth absolutely nothing to anyone save for how it makes them feel.