Glow - Purchase Options

I have the basic plugins I want to purchase Glow is there a difference between the glow plugin has opposed to the one in Studio? I am using the 30 day trial but one I went to purchase it sent me to the Studio version which I do not have.

Topaz Glow is now only paid part of Topaz studio. Topaz Studio itself is free to install. Upon purchase, Topaz Glow will appear automatically in Topaz Studio.