Walmart.com has the 4 pack on sale with their "instore pickup discount" for the price of 1. It is available for store pickup where in stock but it did take calling Walmart.com customer service from the store to get them to approve it.
The store initially had only pulled 2 totes and not 2 x 4-packs of totes because the individual totes were scanning at 16.86 each and said it was a pricing error when I showed them online and the receipt. When I contacted ".com" customer service (store reps told me that .com was a different company lol!) the rep on the phone had to send me to "escalations" rep who approved it over the phone because the original price online showed $57.29 before pickup discount of $40.43 bringing online purchase price before tax to $16.86. These totes are being phased out if I am not mistaken because Sterilite released their new 50 gallon tote style.
**Also wanted to mention that even if the product page shows $57.29 if you add it to cart and select store pickup it should still add the discount.**
It took a while to get it approved but the rep who finally pulled the correct number for me picked out a case of 4 for himself! Luckily they had 22 totes on hand so I was able to get all mine fulfilled!!