[ATDrake]

A few more bargains @ 99 cents from UK-based publishers (available to Canada and the UK, and sometimes also the US, from most retailers; a lot of the previous Headline/Hodder/etc. stuff from upthread is still on sale ):

Two more price-drops to add to the giant $0.99/£0.99+ Paul Doherty sale from Headline upthread valid for Canada/US/UK (maybe a few more regular-priced books have dropped to the higher tiers, but I didn't really check for those):

A Shrine of Murders, 1st in the Kathryn Swinbrooke series starring a medieval physician & Isabella and the Strange Death of Edward II technically a non-fiction medieval true crime

It looks like the earlier Sphere sale in the UK has partially expired, but in Canada we can now get the following for $1 CAD:

• Pseudonymous British historian and novelist Susanna Gregory (SYKM, Wikipedia) : A Plague on Both Your Houses (1st Matthew Bartholomew, 14th century physician) & A Conspiracy of Violence (1st Thomas Chaloner, 17th century spy). The 2nd books of each are just $3.14 CAD: linkage for the author @ Kobo CA, sorted by price.
• Canadian author Louise Penny (SYKM, Wikipedia): Still Life (1st Inspector Gamache in modern Quebec); there's also a much more expensive later version also out from Sphere, which is apparently a 10th anniversary collector's edition with an exclusive author profile

Some dual $0.99/£0.99 bargains for Canada/UK from Hodder and Orion's Phoenix imprint:

• South African author Deon Meyer (SYKM, Wikipedia; has different publisher in US): Devil's Peak (1st Benny Griessel in Capetown, has previously been a freebie), Dead Before Dying (standalone), Trackers (standalone finalist for International Dagger Award; UK only, Canada is $11.99) There's also a different selection of titles marked down to £1.99 and $2.99 CAD: linkage for author listings @ Kobo UK & Kobo CA
• Swedish author Camilla Ceder (Wikipedia SV): Frozen Moment, 1st in Inspector Christian Tell series set in Stockholm (also available in the US)