Walmart offers the Belkin Surgemaster 6-Outlet Wall-Mount Surge Protector, model no. F9H620-CW, for $9.08. Opt for in-store pickup via Site-to-Store to dodge the $2.97 shipping charge. (Amazon charges the same with free shipping for its Prime members.) That's $3 under the lowest shipped price we could find elsewhere, although we saw it for a buck less in August. Sales tax is added where applicable. This surge protector features a 1,045-joule rating.