Ultra ULT31572 10-Outlet Surge Suppressor for $9.75 after this $10 rebate.  Shipping is $4.89 for a total of $14.64 shipped.  Here is a screenshot before the $10 rebate for your reference. It features a 2520-Joule capacity, ground protection indicator, and 6-ft cord.  Most places have this surge suppressor for about $23 or more.