Dollar Tree has three-packs of Dial Basics Bar Soap. Grab two and use a $1.50/2 printable Dial coupon. Get each pack for $0.25. Thats a final price of just $0.08 per bar!

Use one $1.50/2 Dial or Tone Bars 3 ct or larger, Advanced Bar 2 ct or larger, Foaming Hand Wash or Liquid Hand Soap Refill (coupons.com)

Final Price: $0.25 each, when you buy 2, or $0.08 per bar