Ya no kidding... that is because you can get the same thing for a lot less if you just look around. For what ScanAlert charges, they are a waste of money.
You should really have a MasterCard Approved Site Scanning Vendor to scan your site on a quarterly basis at the minimum. There are dozens and dozens of them... just search Google.
If you are PCI level 1, 2 or 3 it is mandatory for a MasterCard Approved Site Scan quarterly.