Walmart offers the Tripp Lite 6-Outlet Surge Protector Power Strip, model no. TLP606, for $5.94. Opt for in-store pickup to avoid the $5.97 shipping charge. That's the lowest total price we could find by $1. It featues 790-Joule surge suppression, 6-foot cord, keyhole mounting tabs, and $20,000 lifetime insurance for connected devices.