Walmart offers the Salonpas Pain Relieving Patch 20-Pack for $3.88. Opt for in-store pickup to dodge the $5.99 shipping charge. That's tied with our January mention as the lowest price we could find by $4. Each patch measures approximately 2.8" x 1.8" and purports to relieve pain for up to eight hours. They contain camphor, menthol, and Methyl Salicylate.
The dollar store is the most amazing place to find bargains for certain purchases. Yes, even pregnancy tests.