I had to sit through the spiel from an old friend who wanted me to rep and thus build her business. They have good products, but the whole thing about having to "switch your stores" from where you normally shop to "their one stop shopping with Melaleuca" really turned me off. I also intensely disliked the requirement of having to spend a certain amount of money every month in order to remain active as either a customer or a representative.
If you were to be a representative building your business, the only way for it to be lucrative is to constantly be building new customers AND having new representatives under you on your team. You can't ease up at all... ever. And for what you do sell and the reps under you sell, you don't get that much money. It's also a very, very confusing payment structure as a representative. The only thing that isn't confusing is how much you pay as a customer.
My friends that do it currently very easily spend their entire Melaleuca paychecks on products. Some of those products they use for their own families, but a lot go toward showing potential customers and reps as "samples."
Oh, and you have to pay a membership fee yearly.
I decided not to do it, as you can -probably tell. When I get back to work, if I go with anyone for vitamin supplements and other health products I'll likely go with Qivana. My husband's youngest sister is a Q rep and she loves it... and is making a ton of money doing it.