There are lot of material available in SFI itself.
Tell them
1.It is a 15 year old organization.
2.It is consistently paying commissions.
3.There are more than 90000 products to buy.
4.It is free to join.
5.It is easy to earn if you work hard.
6.Duplication is the key to success.
7.You do not need lot of money or people to succeed
