The inaugural SA20 champions will be crowned in front of a full house at the Wanderers.
Tickets for the final on Saturday, 11 February, are sold out, while those for the semi-finals at the Wanderers and Centurion are also selling fast.
“The first half of the SA20 has been a massive success so far, it has been amazing to see the fans filling up the stadiums,” said league commissioner Graeme Smith.
“It’s exciting for us to sell out the final so early on in the competition, however, there is still a long road to go until 11 February. There is very little that separates the teams on the log at this stage, we hope the fans will continue to come out in their numbers to support their teams until the final.
“We have seen some fantastic cricket and exciting finishes, spectators will be in for a treat in the remaining matches.”