Talk:Bonetooth Necklace/@comment-96.18.44.204-20120811083450

(Table borrowed from http://leagueoflegends.wikia.com/wiki/User_blog:TheBlueSilence/Item_Efficiency )

Long Sword 415g 10 41.5  N/A

Pickaxe     975g 25  39     6.4% Greater Efficiency

B. F. Sword 1650g 45 36.67 13.2% Greater Efficiency

Bonetooth Necklace at level 1 (22 AD)

45.45~ gold per AD

9.5% less efficent

At level 6 (32 AD)

31.25 Gold per AD

24.6% Greater Efficiency

At level 18 (56 AD)

17.85 Gold per AD

57% Greater efficiency.

BT at full stacks gives 100 AD at 30 gold per AD. As far as AD goes, Bonetooth Necklace is now the most AD efficent item in the game. Buying this as Rengar seems to be a no brainer, even if all it did was give AD. But it also gives movespeed and other unique bonuses.