I got one or two offers in the last year but never on dates that suited me. One interesting thing I noticed from
@sbor90 was visiting Air NZ website which I never tried. That would fit in with the logic of giving it to people who actually need an incentive to book Qantas.
I am resigned to not getting them so am getting creative to get extra SCs. I booked my half-yearly holiday to South Africa at the 12 days of Christmas sale. Got a return J ticket for $4.5k - reasonable; will probably be my last 747 flight am going upper deck way over and 1A on the way back. I get 320 SCs return but by including JNB-CPT Comair in the same itinerary I get an extra 60 SCs each way so end up with 440. Was able to include them seemingly at no extra charge.