I believe there are two facts that prevent this from being a valid, apples to apples comparison:
1. Jason explicitly recommends specific text resources within each 1-on-1. In most of the videos, he holds up each of those resources and tells you exactly why you should care about them and study them. In the new Zarrow 1-on-1 we released two weeks ago, Jason thanks David Ben and Meir Yedid for their blessing to release the video while at the same time showing Ben's amazing Zarrow book (within which there are 40+ pages devoted to the shuffle). He also shows the original publication text for the move. In every single Jason England 1-on-1 without fail, we list full text resources at the very end for additional study. Never once does Jason claim, suggest, or encourage that his 1-on-1's should be your only source of instruction. His expertise is the result of pairing years of experience with study of countless books.
2. Comparing a 40 minute 1-on-1 video from one of the planet's top card technicians to a few pages in a book is by no means an apples to apples comparison. That's a bit like comparing reading the Cliff Notes of a book to reading the pages within it. Will the plot be the same? Yes, but there's a high chance you'll miss the nuances that make it a good story. The same is true for magic. Can you learn how to do a great Diagonal Palm Shift from Erdnase? Absolutely. Tons of people have - Jason England included. But he's not just reciting the text from Erdnase - he's combining his years of experience and personal advice with the technical instruction he received from multiple texts. He's gone through the process. He's done it before badly. And - about two decades later - he now has it down to a science. That experience - combined with the power of high definition video - makes a world of difference. And for an average pricepoint of $5 and an average video length of 30 minutes - that's a ridiculously good deal.
Should everyone truly serious about learning card magic already own a copy of Erdnase? Absolutely. But that does not negate the incalculable value that can result from watching - seeing - listening - studying the advice of it's most expert practitioners. That counsel, that advice, is invaluable, and short of having a private lesson at Jason England's house, it's the next best thing.
