The correlation between Cost and xpm is 0.72. The more Cost, the more xpm, and vice versa. But some values are higher than expected, some are lower. Efficiency is a difference between the value of xpm depending on Cost (blue dots) with respect to the expected value (red line).
| Efficiency | |
|---|---|
| Bottle | 107.5543 |
| Power Treads | 101.2904 |
| Nullifier | 93.4139 |
| Boots Of Travel 2 | 89.3115 |
| Boots Of Travel | 88.6580 |
| Satanic | 87.4624 |
| Skull Basher | 84.7706 |
| Butterfly | 82.8998 |
| Swift Blink | 80.8686 |
| Wraith Band | 78.6167 |
| Battle Fury | 77.4799 |
| Eye Of Skadi | 73.3338 |
| Diffusal Blade | 71.2780 |
| Aghanim'S Shard | 67.0504 |
| Falcon Blade | 65.3351 |
| Disperser | 65.2628 |
| Orb Of Corrosion | 65.0488 |
| Abyssal Blade | 64.3913 |
| Mask Of Madness | 64.3613 |
| Phase Boots | 61.6606 |
| Monkey King Bar | 61.1498 |
| Moon Shard | 54.3446 |
| Desolator | 53.9783 |
| Manta Style | 51.3794 |
| Sange And Yasha | 49.6183 |
| Daedalus | 46.6358 |
| Soul Ring | 42.1271 |
| Harpoon | 40.2415 |
| Linken'S Sphere | 36.7594 |
| Black King Bar | 35.8836 |
| Mage Slayer | 34.6480 |
| Revenant'S Brooch | 33.3303 |
| Hand Of Midas | 31.5011 |
| Blade Mail | 31.2911 |
| Armlet Of Mordiggian | 31.1512 |
| Kaya And Sange | 30.8283 |
| Arcane Blink | 30.5786 |
| Witch Blade | 30.0293 |
| Dragon Lance | 28.5896 |
| Assault Cuirass | 24.6178 |
| Mjollnir | 23.7677 |
| Shiva'S Guard | 23.0940 |
| Bracer | 22.1667 |
| Bloodstone | 21.1565 |
| Crystalys | 18.6289 |
| Heart Of Tarrasque | 17.3592 |
| Radiance | 16.9224 |
| Silver Edge | 16.5738 |
| Eternal Shroud | 15.7782 |
| Hurricane Pike | 11.0212 |
| Echo Sabre | 10.4080 |
| Yasha And Kaya | 9.7983 |
| Magic Wand | 9.1422 |
| Octarine Core | 7.9494 |
| Null Talisman | 5.5667 |
| Overwhelming Blink | 4.6086 |
| Blink Dagger | 3.5246 |
| Bloodthorn | -3.9233 |
| Scythe Of Vyse | -7.1821 |
| Aghanim'S Scepter | -9.4451 |
| Ethereal Blade | -9.5731 |
| Phylactery | -9.6915 |
| Aghanim'S Blessing | -9.7853 |
| Vanguard | -13.6506 |
| Heaven'S Halberd | -15.8597 |
| Crimson Guard | -21.9730 |
| Maelstrom | -23.5366 |
| Refresher Orb | -26.7808 |
| Aeon Disk | -34.8572 |
| Wind Waker | -35.8879 |
| Orchid Malevolence | -36.7155 |
| Vladmir'S Offering | -37.5541 |
| Meteor Hammer | -39.6805 |
| Lotus Orb | -40.3382 |
| Veil Of Discord | -40.9883 |
| Eul'S Scepter Of Divinity | -44.0870 |
| Shadow Blade | -46.8072 |
| Tranquil Boots | -47.2912 |
| Aether Lens | -51.5415 |
| Arcane Boots | -52.6470 |
| Pipe Of Insight | -54.2566 |
| Solar Crest | -57.9180 |
| Gleipnir | -61.7942 |
| Spirit Vessel | -61.9136 |
| Urn Of Shadows | -67.7086 |
| Pavise | -70.2196 |
| Helm Of The Dominator | -71.4068 |
| Glimmer Cape | -73.5668 |
| Dagon | -74.7076 |
| Boots Of Bearing | -78.0852 |
| Force Staff | -81.3989 |
| Dagon (5) | -82.9742 |
| Holy Locket | -85.4405 |
| Drum Of Endurance | -86.4206 |
| Medallion Of Courage | -86.9795 |
| Rod Of Atos | -93.7759 |
| Dagon (2) | -105.2454 |
| Dagon (3) | -120.1642 |
| Mekansm | -120.7487 |
| Guardian Greaves | -121.8576 |
| Helm Of The Overlord | -134.4149 |
| Dagon (4) | -135.4038 |