Blue Metal Dust also known as Cracker Dust and Crusher Dust is commonly used underneath Synthetic Lawn (Artificial Grass).
More recently also being used as a compactable drainage base for pavers and garden slabs.
6×4 Trailer load
Price: $70
Cubic metre
Price: $105
Bag 20kg
Price: $7
6×4 Trailer Load = 2 Scoops ≈ 0.7 Cubic Metres
3 Scoops = 1.5 Trailer Loads ≈ 1 Cubic Metre