Amazon discounts a selection of Big Ideas Simply Explained Kindle eBooks to 99 cents each, as listed below. That's the best price we could find for each title by $9. The deals:

• The Economics Book (Big Ideas Simply Explained) Kindle eBook for 99 cents (low by $9)
• The Philosophy Book (Big Ideas Simply Explained) Kindle eBook for 99 cents (low by $9)
• The Psychology Book (Big Ideas Simply Explained) Kindle eBook for 99 cents (low by $9)