Talk:Gold efficiency/@comment-1765404-20140727064609

For "gold / (stat)" use: Item cost / # of stat

For "greater efficency" use: "gold / (stat)" of base item / "gold / stat" of next item || then subtract 1 and move decimal right 2 (round if necessary)

Ex1: Amp tome

Gold=435   ||   stat = 20

435/20= 21.75 =Amp tome's Gold / AP

Ex2: Needless rod

Gold=1600   ||   stat= 80

1600/80= 20 =Needless rod's Gold / AP

Ex3: NR's greater effiecny over AT

AT's gold/stat = 21.75

NR's gold/stat = 20

21.75/20 = 1.0875

1.0875 - 1 = .0875

.0875 -> 8.75% = Greater efficency