I think he is talking about a 10-bagger from the oppie conversion, forgetting the (close to negligible) costs of the oppies back then.
I took the smallest position I have ever taken for 0.4c. Absolutely kicking myself that I didn't buy more. Still, it was a no-brainer to convert them all. Barring a catasphrophe, I'll hold at least till the CGT halves.
h.