LEGO Classic Creative Space Planets 11037 $21.60 + Delivery ($0 with Prime/$59 Spend) @ Amazon AU

RRP $49.99. Apparently dropped from $44.05, not sure who Amazon are matching, more expensive elsewhere from the usual places.

450-piece kit with a space rocket model measuring over 12 cm (5 in.) high
Solar system building toy for space-loving kids aged 5 and over
Construction is simple and fun with digital guidance in the LEGO Builder app