for those in Radelaide in the need,
I went to Menzels and picked up my spare cube lids at 3 bucks each...
then saw them at Gaganis for $1.50 each !
not to worry.
Oh and if anyone needs crab cooker inserts, Gaganis sells them seperately (no price labels and i was in a rush so couldnt ask). Theyr'e aluminium and looked like around a 40-50 litre jobbie and a 60-70 litre one (eyeballed)