EXHIBIT 99.13 PURCHASE AGREEMENT This PURCHASE AGREEMENT is made and entered into as of April 26, 2002 (the "Agreement") by and among Blue River, LLC, JMG Convertible Investments, L.P., JMG Trition Offshore Fund Ltd., Camden Asset Management L.P....Purchase Agreement • April 30th, 2002 • Capital Z Financial Services Fund Ii Lp • Mortgage bankers & loan correspondents • New York
