These (https://www.ozbargain.com.au/node/812380) are back in stock although at a dearer price point, not sure if it is the normal price.
Thought of sharing as they went like hot cakes last time at @99.99.
Can't vouch for other models, but couldn't have gotten a better pair for the Q930C speakers.
I have these from a previous deal. Perfect for 990b. Hurry and purchase before they go OOS