Lowe’s has Square Concrete Patio Stone (11.7"x11.7", various colors) on sale for $1. Select free store pickup where stock permits.
Note, availability for stock and sale pricing may vary by location. If you see a higher price, check another local store in your area by clicking "Check other stores" on product page
Available Colors:
Gray
Red
https://www.lowes.com/pd/Square-G…in/3018983