Builders Club and Billing - Referrals: How do they work
YumYumCheerios July 23, 2010
When you purchase a membership using select payment methods, you have the option to refer another player at the time of purchase. There is a box on the payment page that states, "referring user's account name". If you add a username in the box and refer someone, then your account and their account will receive 400 Robux.
The referral option is available one-time with your initial membership purchase. Other players may refer you when making their initial membership purchase and your account will receive 400 Robux.