If it's Spark or Plexus (sp?), everybody and their brother is selling it around here. I can't speak as to the effectiveness of either, but I can't use Spark anyway due to having a bad reaction to sucralose, one of its ingredients.
From what I've seen in other pyramid schemes (aka "multilevel marketing"), only the handful of people at the top actually make any real money. Unless you get lucky, you'd have to get in quick and do your thing before the competition floods the market. Bad thing is, you usually have to recruit your competition! Ugh!
I sometimes sell my quilts at local events, and you should see the MLM vendors trying to beat each other to get a spot in the event. Usually the event organizer only allows one vendor per company, and the competition can get downright ugly.
My vote is to stay away, especially if there is already competition in your area.