The "Today's Big Deal" at Kindle UK features 34 mystery/thriller-ish titles, including titles by Ann Cleeves, CJ Sansom, Jack Higgins, Maj Sjöwall and Per Wahlöö, CJ Lyons, Ed McBain, and some others. The ones I looked at all were in the range of £0.99 to £1.19, although I didn't look comprehensively.
This is a horribly messy link, but I don't think I see a tag in it, and not sure how/if to clean it up:
https://www.amazon.co.uk/b/ref=s9_ac...d_i=5400977031