these are 170 used retaining wall bricks. this is the original product description from Home Depot where I originally bought them: https://www.homedepot.com/p/Pavestone-RockWall-Small-11-63-in-x-4-in-x-6-75-in-Red-Concrete-Retaining-Wall-Block-11012351/303160179
note that they were previously installed on a rock wall and many have glue residue as shown in the images which wouldn't affect how you stack them. this listing is for all 170 stones.
several are stuck together with the liquid cement but can be separated with some effort.
all stones are intact and none are broken.
in bulk they would cost $3.12 each from Home Depot or $530.40