According to the license for "Corporate Use" TestPath software is shareware and can be used legally for 10 days before it needs to be registered. After evaluation period you must either register the software or delete it.
The current (at the moment of making this software) registration amount is US $10.00. This registration possibly includes next version of the TestPath and/or bugfixes (if any are found).
Online Registration
To find latest registration information please go to the following web page: http://home.delfi.lv/ojarsk/testpath