SIP Accounts

Any of you guys investigated Vox Telepreneur? To date this part of Vox Telecom Group has been offering call savings and rebates to consumer and small business via what they call their Vox ADSL Phone or Vox ADSL PBX. They also have a host of complimentary products, Vox Fax (free fax2email with rebates to the subscriber), Vox Mahala (free dial up), Vox Vaya (international calls to fixed line from "barred" mobiles at local cell rates or "free" minutes). Registered Vox Telepreneurs earn up to 43% of the services gross profit as annuity income as well as once offs for registering hardware and no contracts for the subscriber.
Latest addition is SIP accounts. Registration fee per SIP R299.00; R25 per 087 number (up to 10 numbers per SIP); SIP is pre-loaded with R300 airtime (to reduce risk). Same Vox rates apply, saving potential - 11% local, 40% national, 21% cellular, up to 60% international, free ON NET calls plus inbound rebates cellular and Telkom/International. Same Gross Profits from a dealers perspective. I think the intro of SIP offering opens up massive potentials for Telco vendors.
Any comments?
Website to check www.supervoxtelepreneur.co.za