As someone mentioned we are all adults and can sell and buy as we like.
If I were to sell on ebay I would consider this: The packs sell for far more on there, than I sell them for at my one to one meetings with clients, so why would anyone want to spend more with a total stranger who is just out to gain financially from selling, rather than buying more cheaply from a trained counsellor who wants to help them?????
Perhaps because most people who buy products from ebay are in some way contraindicated.
My conscience would stop me, I could be selling to someone who is severely depressed, pregnant, suffering serious heart conitions, the list is endless.
Maybe it's a case of ebay being impersonal, after all if someone were to suffer due to reckless use of a diet product, the seller on ebay would never know would they.
Let your conscience be your guide.
Tracey