Membership

Hi there. I signed-up for a membership on this domain https://premium.wpmudev.org expecting to get the WHMCS System to start a hosting business. Now I found that I made a mistake......or not? I am a little confused where should I go to to get what i need.
This domain http://www.whmcs.com/order-now/ shows another membership options, I only realised that now...sorry guys. Thanks.
User = limaromeo.