RogueTr00per
Honorary Master
@gjm, thanks for the post. It applies to me almost identically except I'd use an interest rate of prime less 0.6% on the 15k requirement as per the rate on my mortgage bond.
At 8.65% Opportunity cost of R15k min balance = R107.50.
Which brings me to a total of R207.50.
So therefore I am paying R8.50 over and above bundled R199 pricing for the 1000 extra reward level points. It's acceptable to me as I want them as a buffer to maintain reward level 5... but we can see how they have shifting the pricing such that we aren't really scoring either. Those damned actuaries!

In your case you're paying an extra R15 for 1000 reward level points. Depends if you need them or not?
At 8.65% Opportunity cost of R15k min balance = R107.50.
Which brings me to a total of R207.50.
So therefore I am paying R8.50 over and above bundled R199 pricing for the 1000 extra reward level points. It's acceptable to me as I want them as a buffer to maintain reward level 5... but we can see how they have shifting the pricing such that we aren't really scoring either. Those damned actuaries!
In your case you're paying an extra R15 for 1000 reward level points. Depends if you need them or not?