Walmart offers the Kaleidoscope Wonders Color Art for Everyone Coloring Book for $1.77. (Amazon charges the same with free shipping for Prime members.) Opt for in-store pickup to avoid the $5.99 shipping charge. That's tied with our mention from last week and the lowest price we could find now by $6, except for the mention below. It features 24 designs.
Note: Redface2004 via eBay has it for $2.24 with free shipping.