P D James , well know for the Adam Dalgleish series has a lot of her books for the kindle at 99p today . I notice a few of them aren’t reduced but you could pick up 12 of the 14 Dalgleish series for 99p each and other of her novels are similarly priced.
http://www.amazon.co.uk/P.-D.-James/e/B000AP5NPM?ref=dbs_a_mng_rwt_scns_share
http://www.amazon.co.uk/P.-D.-James/e/B000AP5NPM?ref=dbs_a_mng_rwt_scns_share
This site contains affiliate links for which MHF may be compensated.