The listing for 'TWEEN SNOW AND FIRE in THE ENGLISH CATALOGUE claims that Heinemann published the novel in September 1892, but I have read elsewhere that it was expected in early October 1892.
The October 1, 1892 edition of THE PUBLISHERS' WEEKLY lists the Cassell publication in a cloth binding (which I own) priced at 75 cents, and a paperback copy priced at 50 cents.
Street & Smith of New York reprinted this novel, circa 1900, in order to capitalize on the Boer War. From ads at the end of the book, the ad below titled THE TRANSVAAL WAR reveals insights into Street & Smith's motivations for publishing 'TWEEN SNOW AND FIRE.
I once owned a copy, but sold it off.