Hi there!
Thank you for reaching out. We just reuploaded the regular book at a smaller size and it’s now 294 MB, with the selectable text preserved.
One thing you were probably running into is that when you use .pdf compression software that isn’t Adobe, it usually converts everything into images, which removes the ability to select the text. That has been our experience, at least.
We will also convert the print copy into a version with the selectable text preserved, later today, so stay tuned! It currently does not support selectable text because we optimized it to be ideal for printing, rather than use as a .pdf.
Thanks again!