They do work, and I don't sell them. I used to but since I don't any longer I don't benefit in anyway from saying that they do! I stopped selling them.. maybe 8 months ago? But I do still buy them.
However, the reason why I stopped selling them is because out of my 12 customers I had 4 come back and say it didn't work at all for them. I was surprised given my awesome results but couldn't keep selling something if it didn't work for everyone and made people unhappy with me.
I did a few wrap parties, each time everyone had some inch loss though, and some more than others.
Here are MY results: