Amazon.com has DEWALT Tough System Workshop Racking System (DWST08260) on sale for $67.90. Shipping is free.
Not quite the lowest price ever, but if you order two it stacks with the $25 off select Dewalt items with $100 purchase deal running. My total was $111 before tax.
Edited: dewalt deal clarification
https://www.amazon.com/dp/B01N071…3Db2Y