Both http://www.VIPProfits.com and http://www.9am.com offer a second tier program.
For VIP Profits you earn 10% of whatever is paid out in commissions to the affiliates you bring and at 9am.com it is 5% of whatever commissions your 2nd tier affiliates bring in.
VIP Profits pay between 20-40% commissions and 9am.com pays between 20-30% commissions.