See the full recipe for Marble (T8), the cost to craft each material, live prices per city and the estimated selling profit.
Recipe
Craft calculator
Production cost
8
Sale (gross)
—
Net sale (after tax)
—
Profit / unit
—
ROI:—
Craft tree · city: Caerleon · updating prices…line cost
Marble×1T8_ROCK
unit: 8 · craft 8
8
Basalt×1T7_ROCK
unit: 4 · craft 4
4
Slate×1T6_ROCK
unit: 2 · craft 2
2
Granite×1T5_ROCK
unit: 1 · craft 1
1
Travertine×1T4_ROCK
unit: 0
0
★ = cheapest option for the node. Farm = 0 silver (costs your time).