There are about 200 more tickets showing as sold in the two end blocks of the SSL, blocks 1 and 8, and I suspect that's where the tickets are for. Looks like about half of them may have been taken up already, as there were 45 pairs left when I looked earlier.
Bloody odd that the club aren't pushing this deal, but maybe they'd rather sell tickets at full price as these are already "sold" to JackFM?