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::'' Job cost = Process Time Value × System cost index × Structure bonus × Facility tax'', | ::'' Job cost = Process Time Value × System cost index × Structure bonus × Facility tax'', | ||
where Process Time Value is a number derived from the material cost of producing the item, blueprint rank and blueprint research level (ME and TE handled separately) and the system cost index is | where Process Time Value is a number derived from the material cost of producing the item, blueprint rank and blueprint research level (ME and TE handled separately) and the system cost index is a number derived from the ammount of work done in that system. | ||
The system cost idex is calculated as | |||
::'' System cost index = sqrt( Work hours done in system in past 28 days / Work hours done in universe in past 28 days ) '' | ::'' System cost index = sqrt( Work hours done in system in past 28 days / Work hours done in universe in past 28 days ) '' | ||
(Work hours tracked separately for ME researc, TE research, copying, manufacturing and reactions). | (Work hours tracked separately for ME researc, TE research, copying, manufacturing and reactions). | ||
The Process Time Value for researching to leven ''n'' is calculated as | |||
::'' sum( number of materials × adjusted price ) × (0.02 / 105) × ( Base duration<sub>n</sub> - Base duration<sub>n-1</sub>)'' | |||
== Why should I copy my BPOs? == | == Why should I copy my BPOs? == | ||