Guess what!?
I just put in an order @.30 - for more shares than were on offer at .30
Instantly filled, and as soon as I had refreshed the screen, even more shares than previously were on offer at 0.30. (actually more by exactly the amount of my purchase!)
i.e. if 15K were on offer, and I purchased 18K, then the new amount on offer was 33K (after the sale)