Arm & Hammer Baking Soda is $0.59 at Publix. Combine a $0.50/2 Arm & Hammer coupon with a $0.25/1 Ibotta rebate offer to pay just $0.22 per box!

Use one $0.50/2 Arm & Hammer Baking Soda products (armandhammer.com)

And submit one $0.25/1 – Baking Soda, any brand, any size, via rebate app (ibotta.com)
Pay $0.68, Submit for $0.25 Ibotta Credit

Final Price: $0.22 each, when you buy 2