It's a starting point, but I agree, asking Satrix to supply the figures when comparing their Investment Plan to other brokers is not the best journalism.
Low cost brokers is probably the way to go, however, just to throw a spanner in the works, another factor not considered is the cost of reinvesting the dividends. Looking at my STD bank share trading account, these brokerage fees have basically cancelled the dividend payouts over the last 3 years. I believe the investment plans include these costs in their annual fees?