Way back in May 2008 a set of #1-188 sold on eBay UK for £1,684. Nice!
Super Detective Library was the third post war, pocket-sized series published by Amalgamated Press, beginning in April 1953. The two other series from Amalgamated Press had begun earlier - Cowboy Comics was first published in May 1950 and Thriller Picture Library was first published in November 1951 - all three had a 64 page format.
Super Detective Library ran to 188 issues, with two produced per month, through to December 1960.
The series published stories of famous detectives including The Saint, Buck Ryan, Lesley Shane, Rip Kirby and the space detective, Rick Random. On many occasions the comics were a reprint of comic strips that had appeared in newspapers rather than being original drawings. It was edited by Edward Holmes who also acted as editor on the other two series. As well as the title Super Detective Library, the series also ran with the strap-line Told in Pictures from issue #1 through to #12 and then All in Pictures from number 13 through to number 154, changing to Super Detective Picture Library from number 155 until the final issue #188.
See the excellent Classic Comic Store Ltd for a ton more information. Great web-site - drool over it all the time!
Note: some PR issues may have no value. Selected issues in FN, VF or VF/NM may not exist in some titles.