For a balance of convenience and price, and Lowe's are the standard go-to's, but local masonry supply houses often offer better bulk rates and a wider variety of block types. Major Retailer Overview

: (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.

: Users find them sturdy enough for heavy support (like mattress bases or rain barrels) and easy to stack for garden beds.

: Frequently cited as the cheapest big-box option, often by a significant margin. Key Product Ratings & Reviews

Sakrete 8 in. x 8 in. x 16 in. Standard Concrete Block: User Reviews

: Reviewers report these can be brittle, with some instances of cracking or crumbling during rough handling. Local vs. National Suppliers