Spy Sweeper 4.0 by Webroot Software, Inc

Spy Sweeper 4.0 by Webroot Software, Inc.
(for Windows)
$29.99 — just $9.99 after 2 rebates — at CompUSA.
CompUSA charges $5 for shipping, with free shipping on orders of $150
Rebate form 1, Rebate form 2
Note: Final price $9.99 after $10 mail-in rebate and $10 competitive/upgrade rebate.