Henry VII and I have something in common: cheapskates (unless it's something we really want! ... but even then, I suspect he also complained at shelling out $$, even if you ARE paying hundreds of thousands of pounds to get a traitor in your Tower).
So, when this book turned up on Kindle with what I consider to be a BIG price tag (nearly $20, for an electronic book?!), I flinched -- and bought it anyway, since the Hardback has been stalled indefinitely and I need it for research.
I reserve the right to change my opinions later, with a more careful perusal of the book (I am rushing through it, due to time constraints on my end for another project) but as it stands, this seems to be a fairly thorough and informative read about Margaret Pole. I learned a few things I was unaware of in other resources, but also wondered why a few things are missing (for example: various sources claim Margaret Pole and Henry VIII had a "land dispute" without further detail in 1518; there is no mention of it here, unless it comes in the context of her later demands for the extended Warwick estate).
Margaret Pole was no fool. She was careful. Few people knew her true opinions, so what we do know of her (including her intense loyalty to Katharine of Aragon) comes from a few specific, isolated incidents, such as when she blatantly refused to turn over Princess Mary's jewels and plate when the king demanded them of her. This means historians have little insight into her personality, true opinions, or motivations, which makes writing a biography about her difficult. All you have to work with are documentation from other people in the period, dry reports of what she bought / her house accounts, a few letters, hearsay from the Spanish ambassador Chapuys (an unreliable narrator), and myths -- so, a lot of it becomes guesswork. We don't even know what her husband died of, or when it was, exactly. This author does fall into the biographical trap of insinuation from time to time ("Though we have no record of what Margaret actually thought, we can probably IMAGINE her reaction..."), which doesn't bother me, but...
Given there isn't much to go on about the subject, a lot of the book includes "filler" -- extensive details and background on the people around her, and the incidents that made up the circumstances surrounding her life. There's a lot about Henry VIII, Mary Tudor, Katharine of Aragon, and so on. If the reader has zero knowledge of any of it, in order to fully understand the court itself, the book needs this -- but if the reader is already familiar with all of this from other sources (Henry divorced his first wife to marry Anne, who was unpopular and fell from power), it becomes redundant. This means you're mostly paying for "History of the Tudor Period... with as much as anyone knows about the Pole Family."
Since I'm reading it for research purposes and not for fun, I skimmed a lot of the chapters where I knew most of the background information already, but it does have a straightforward, informative style that doesn't get bogged down too often in "boring" essentials.