Let me try and answer all this, since there are some unknowns at this time.
1. Where?. I have a few people talking to me about marketting and handling that aspect so when I finish with those discussions I will know more and have more answers. I have also yet to decide if I will sell it on my site, if I do it will be just for the core product itself since I really do not want to get into running a store on my site and NPC Designer's varies products and product lines.
2. How will the payment be handled, I think most handle things thru paypal. If for some reason someone needs to handle something thru mail I have no issues there just will probably not be a public method.
3. Updates? Right now for certain I can say if NPC Designer is sold it will be for 1.x version. I have not coded version 2 yet and really have not figured out just how vast of a rewrite it will be in some of the engines (Two I know for certain need to be recoded from the ground up). If it takes me nothing to make all the changes needed to reach the goals of version 2, then there will be no additional charges for current owners of a registered copy. Worst case, is I have to do a ton of coding and it gets really wicked, then there may be an upgrade charge.
And all this is if I can convince my wife I am still having fun, after all I am retired. I promised my beta testers I would finish version 1 and I kept my word.