Before you melt down a stack of rare materials, it pays to know whether the craft is actually profitable. This calculator sums every ingredient at its quantity and price, adds a crafting fee, and divides by yield to give the honest cost per finished item.
How it works
The math is a straightforward weighted sum with a yield divisor:
materialCost = Σ (quantity_i × unitPrice_i)
totalCost = materialCost + craftFee
costPerItem = totalCost / yield
Each material row contributes its quantity multiplied by its unit price. For recipes that consume intermediate sub-components, enter the sub-component as a material line and use its own crafted cost as the unit price, building the total from the bottom of the tree upward.
Example
A recipe needing 10 iron ore at 5 each, 4 leather at 12, and 2 rune dust at 30, with a 25 crafting fee and a yield of 1, costs 50 plus 48 plus 60 plus 25, for a total of 183 per item. If the finished item sells for 150, crafting loses money and you should sell the raw materials instead.
Tips
Always compare the cost per item against the market price of both the finished item and its raw materials. Crafting is only worth your time when the finished value clearly exceeds the all-in cost shown here, including the fee.