That is supposed to be a good collection of Aristotle, and probably more Aristotle than one needs. I have instead the 2 volume Oxford complete works of Aristotle, though I admit I have not read it all or anything close to all of it. I bought it primarily to be able to use it for reference, as it has an index which enables one to find where Aristotle discusses various things throughout his works. And for that, it has been handy occasionally. But I do not have a great love of Aristotle, so I am unlikely to ever read it all. And now, of course, one can use the internet for searching things. I bought the Aristotle a long time ago. I also have an exhaustive concordance of the Bible that I would not purchase today because of the internet, but it is nice to have in book form and has no particular value (because of the internet), so I have no incentive to get rid of it. Come to think of it, I would not go far out of my way to buy the Encyclopedia of Philosophy that I have, either, due to various online encyclopedias of philosophy. Still, there is something nice about having an actual book, whose text never gets altered into something else.
"A wise man ... proportions his belief to the evidence."
— David Hume, An Enquiry Concerning Human Understanding, Section X, Part I.