You have every right to make a competing product. That's business. After reading this thread though, I no longer like the vibe, and as a consumer, I would not do business with you. That's business. I'm not judging you, or saying you're doing anything wrong, I just don't like how this went down.
Couple of points.
Why name the thing, get 'em all ready to sell with a PD reference if you were not planning on making these as a business? If you just came out from the start with that, I would have had some respect for your product. I agree with earlier posters who originally thought you were just making them for some sick friends, and some others. Then you let it out you'll fulfill orders. Then there's a website. Then there's discounts and now they are for sale, etc.. Pretty quick change of plans.
But keep making them! As consumers, we can do our own research and choose what is best for us. I am sure you will make sales. It is my take there was a bit of deception in it's launch, and I am not a fan of mentioning it's creation for sick/cancer patients with a 180 turn for all, when I feel (and this may not be the case) that was the intent all along. Again, not accusing you of anything, it's just my personal perception, and perception becomes reality.
I am open to hearing another side to the story, and would say when I'm wrong or have rethought this, but so far I just have a bad taste in my mouth.
Good luck with your product. In the end, vaping allows a healthier means to an end over combustion, and that is good for all.