Terrible formatting with non-standard text size, and the lines of the poem are indented in such a way to render it unreadable. The explanatory notes at the end of the book are not hyperlinked to the text; in fact, there are not even any footnote numbers in the text.
If you download the sample, you can only see the first half of the introduction, so there is no way you can tell how bad the text of the poem is.
This is the third Penguin book I have bought for my Kindle, and each one has the same problems. Why does Amazon allow Penguin to offer such shoddy products, and then allow them to charge something close to full print price for clearly inferior editions?