Financial gain concerns me less than the content correctness and appropriateness. I'm a strong advocate of Hagnar Hanas and Gary Scheiner, who have had their books republished several times; no doubt they have gained financially from rheir authorship.
Personally I enjoyed reading GG's original book overall and although her style was not always to my preference I learnt a great deal about metabolism and refreshed my knowledge on some bits I already understood.
Her salad hack works for me - and I don't need to search for low carb meals; I particularly appreciate the increased fibre content, for minimal carbs and thus minimal extra insulin - since I am comprehensively insulin dependent anyway. My salads are extremely varied, selected from up to 10 different vegetables out of a list of over 20 possible ingredients. I make a batch that last about 4+ days, preserved partly by being kept in the fridge and partly because there is usually pickled veg content. I drink vinegar based drinks, when convenient and the extra vinegar exists in our larder. Neither of these hacks cost me a lot extra and GG doesn't profit from that extra as far as I can possibly foresee. But my reduced glycaemic variability has been noticeable for the last 6+ months. So
@Magzy, in answer to your original question, 2 of her hacks are fine for me and I probably subliminally follow other hacks which don't create profit to GG. So I have no beef about GG's probable financial gain and her e-book cost me less than a fiver.