I recently stated in a Corel NG that the Gridliner program cost $5.99. I don't remember which NG it was so I'm trying to cover all bases.
At the time I made the post I was not aware that a new version was about to be released. There is now a Gridliner2 and the cost has gone up. I think it is still very reasonable for what the program does. There is also a new web site for those interested.
http://www.kinneticfx.com/gridp1.htm