Interest rates have gone up by 0.25% on a bond of R 1 000 000 for 20 years at prime rate you'll now be paying R 9 158,60 as opposed to the old rate of R 8 997,25. Therefore, an extra ± R 160 per million needs to be accounted for on your new purchase.
9% - R 8 997, 25
9.25% - R 9 158,66
9.5% - R 9 321,31
9.75% - R 9 485,16
10% - R 9 650,21