One's real cost baseClem brings up an interesting topic which is the perspective on one;s reference point cost base.
I agree that SU's divi is 8% on what I paid, but the reality is that history doesn't count with investments as today's price is the only relevant number.
One's historical cost base can either be the source of joy or pain depending upon the current market but in reality, the cost base is irrelevant other than for tax consequences.
At this stage of my life, I can look at my inability to perform certain physical feats that I could do in the past or the fact that I'm now invisible to the pretty young girls as a source of sadness. Or, I can look at my current health and age as my real cost base and make decisions based upon looking ahead.
The day when I no longer look forward will hopefully be the last day of my life. If we treated our investments the same way, I think we would be all be better investors.