Amazon.com offers the Ivory Aloe Soap 4.5-oz. Bar 10-Count 3-Pack for $14.97. Add it to your cart via Subscribe & Save and it falls to $12.72 with free shipping. That's $0.42/bar and the lowest total price we could find for this quantity by $5. This item is expected to ship on January 6.
Of note, be sure to cancel Subscribe & Save after your order ships or you'll be billed for subsequent shipments at whatever price Amazon charges then.