Well... I guess that would be determined by one's own moral code. I bought my first GVG second-hand. I emailed VaporGenie a few months ago asking them if I could purchase a ceramic filter if I had bought my GVG from somewhere other than the VG website, and they sent me the link to the hidden "replacement tops and filters" page.

So technically it's not possible to purchase a replacement filter unless one has purchased a GVG previously, or they are comfortable being dishonest in order to get what they want... :? I certainly wouldn't be comfortable lying in order to purchase an object that allows me to venture into hyperspace more efficiently. Dishonesty and guilt are two things that I definitely do not want on my conscience, especially during the moments leading up to such a journey.