I've read about 25 of Haggard's books, including a good nonfiction book called A Farmer's Year.
Some that impressed me: Montezuma's Daughter, She, King Solomon's Mines.
At least of interest (one reading): Nada the Lily, Marie, Child of Storm, Finished (the Zulu saga); Swallow; Eric Brighteyes, The People of the Mist, Heart of the World, Allan and the Holy Flower, The Ivory Child, etc. I think Haggard is usually quite readable when he writes about Africa. Writing about Egypt tends to tempt him to reflections on Life, Fate, Love, etc. that I don't relish.
An off-trail "mundane" story, Dr. Therne, was surprisingly good, I thought.
I didn't think When the World Shook, She and Allan, or The Virgin of the Sun were as good as I'd hoped they'd be. I haven't been able to finish The Ancient Allan and have doubts of ever reading Wisdom's Daughter.
Morton Cohen's biography of HRH is good, and Roger Lancelyn Green had a nice chapter on HRH in Tellers of Tales, although I wonder if he isn't mistaken when he says that C. S. Lewis told him Virgin of the Sun was one of HRH's best. That is an Incan novel, and I wonder if CSL wasn't really thinking of the Aztec novel, Montezuma's Daughter.
I typically download his novels from Project Gutenberg or Project Gutenberg of Australia, reset the texts in a typeface and size that I like, print the sheets, and staple them together with extra-large staples. One of his novels usually comes to three "volumes." However, I have a few old hardcovers of some of his novels that I bought back in the Seventies when apparently there was little interest in them, e.g. an attractive Longmans hardcover of Montezuma's Daughter in bright green cloth with a red "Aztec" design stamped on it, from about 1909, bought for around $4 at the Bartlett Street Book Store in Medford, Oregon, about 35 years ago.......