I just purchased the Complete Works of E.M. Bounds that's on sale. Logos advertises the books as his complete works on prayer. As far as I can tell, the book itself is simply titled "The Complete Works of E.M. Bounds." But since the books within it are all about prayer, Logos' description here is accurate.
However, according to "Information" (CTRL-Shift-I) within the book, E.M. Bounds wrote 11 total books with 9 on prayer, but the book only includes 8. It seems like there is misinformation somewhere.
Complete Works of E. M. Bounds on Prayer: Eight Volumes | Logos Bible Software