SafeRacks Storage Bin Rack - 2 Pack $135 (or $67.50 each) - Free S&H, No Tax, Stack Discount)

SafeRacks Storage Bin Rack - 2 Pack $135 (or $67.50 each) - Free S&H, No Tax, Stack Discount. Needed two of these rack and noticed these dropped to $80 on Costco's site this morning. Went to look for some specs and found SafeRack had a 2-pack on sale for $150. Wasn't really up for trading a $10 savings over the Costco benefits, but then decided to see if their 10% email/mobile sign-up would stack (MOBILE10). Turns out the code did stack and brought the price down to $135. Furthermore, please to see that no tax was applied to the final price. I've included a picture of my order confirmation total.