: (e.g., Swift Supply or Block USA ) are better for massive quantities or specialty sizes like 12-inch blocks that big-box stores might not stock.
: Frequently cited as the cheapest big-box option, often by a significant margin. Key Product Ratings & Reviews
: Users find them sturdy enough for heavy support (like mattress bases or rain barrels) and easy to stack for garden beds.
: Preferred for finish work and decorative blocks. Some users have noted they occasionally find damaged corners in store stock, so inspect blocks before loading.