Temporarily out of stock, but can be ordered. Amazon has the 2023 The Puzzle Society Sudoku Day-to-Day Calendar on sale for $4.49 with free shipping on $25+ or with Prime. Other 2023 options under $5:

• This Day in Science for $3.74
• Cat Shaming for $4.24
• National Geographic: American Roadtrips for $4.24
• Sports Illustrated Sports Day-at-a-Time for $4.99
• Bible Verses Day-at-a-Time for $4.99