That would deend on lots of things. I once sold Avon and was doing good with it until they got rid of the brochure by mail.
Thisngs that it would depend on:
1. Customer base: repeat orders will keep you in business.
2. Location. Yes, even if you are on the internet. It depends on who else is selling in your area and how long they have had the customers there.
3. How much time and money are you willing to put into it. Remember all those nifty fees they add on to your order, they eventually catch up with you.
4. Though they tell you that you do good with an online presence you will still make more money if you go door to door...that was a scary things for me as where I moved to wasn't the best of neighborhoods to go selling door to door. It was the people, it was the walking distance from house to house and the hilly terrain of such.