Not too much to list today.
Amazon has Real Valor (Steve Farrar) and Long Story Short (A Must Have – Devotions on OT for your family or Sunday School, etc.) for FREE and the companion volume, Old Story New (A Must Have – Devotions on NT for your family or Sunday School, etc.) is available for 99 cents (Vyrso).
Desiring God has made available The Joy Project in multiple formats (Kindle, epub, pdf).
Amazon also has Keeping the Heart by Flavel for 99 cents.
Happier hunting later in the week.