Commerce
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This information is reliable as of patch 2.0.201.56. |
Caves of Qud has a bartering system where items vary in price based on a multitude of factors. Commerce is the base value that is specified for each item that is then multiplied or divided by a multiplier depending on selling or buying.
Trading Multiplier Formula
$ {\text{Multiplier}}=0.07\times ({\text{Ego Modifier}}+2{\text{(if Snake Oiler)}})+0.35 $
If the player has Glotrot, Ego modifier and Snake oiler no longer have an effect and returns a flat -3. The equation then becomes
$ {\text{Multiplier (with Glotrot)}}=0.14 $
The multiplier cannot be higher than 0.95(achievable with +9 Ego modifier or +7 Ego modifier with Snake Oiler) and the multiplier cannot be lower than .05 (-5 Ego modifier).
When buying an item from a trader, the value of the item in question is divided by this multiplier. When an item is sold by the player, its value is multiplied by the multiplier.
Reputation Effect on Trade Prices
Reputation with the merchant also affects trade prices, acting essentially as a bonus or penalty to the player's ego modifier.
| Reputation with merchant | Bonus applied to Ego Modifier for Trade |
|---|---|
| 600 or more | +3 bonus |
| 250 to 599 | +1 bonus |
| -249 to 249 | 0 |
| -599 to -250 | -1 penalty |
| -600 or less | -3 penalty |
Sacred Well Reputation Formula
How much reputation the Sacred well gives is also dependent on the commerce value of the object.
$ {\text{Reputation}}={\text{Commerce}}/10 $
Reputation cannot go lower than 1, and an object that has no specified value defaults to 10 reputation.
Book Experience Formula
$ {\text{Exp}}={\text{Floor}}({\frac {Commerce^{2}}{25}}) $
Modifications and Commerce
Each modification has a Value attribute that is multiplied against the base Commerce value to get the new modified value.
Items by Commerce Value
| Item | Value | Weight | Category |
|---|---|---|---|
| Item | Value | Weight | Category |
 Otherpearl | 33333 | 0# | Bracelets |
 Hand-E-Nuke | 10000 | 1# | Grenades |
 Kesil Face | 10000 | 1# | Masks |
 Shemesh Face | 8000 | 1# | Masks |
 circle of light in the chord of Ehalcodon | 7500 | 1# | Floating Nearby |
 circle of light in the chord of Agolgot | 7500 | 1# | Floating Nearby |
 circle of light in the chord of Shugruith | 7500 | 1# | Floating Nearby |
 circle of light in the chord of Qon | 7500 | 1# | Floating Nearby |
 circle of light in the chord of Qas | 7500 | 1# | Floating Nearby |
 circle of light in the chord of Bethsaida | 7500 | 1# | Floating Nearby |
 circle of light in the chord of Rermadon | 7500 | 1# | Floating Nearby |
 flange from the Great Machine | 6666 | 250# | Armor |
 sail from the Great Machine | 6666 | 50# | Cloaks |
 gauge from the Great Machine | 6666 | 50# | Masks |
 gear from the Great Machine | 6666 | 50# | Shields |
 Earth Face | 6500 | 1# | Masks |
 zetachrome lune | 6000 | 35# | Armor |
 Levant Face | 5000 | 1# | Masks |
 mecha power core | 4000 | 70# | Items |
 Null Face | 4000 | 1# | Masks |
 Olive Face | 4000 | 1# | Masks |
 swarm rack | 3200 | 300# | Heavy Weapons |
 timecube | 3000 | 1# | Trinkets |
 mental aggregator | 2265 | 1# | Helmets |
 psychodyne helmet | 2140 | 12# | Helmets |
 transkinetic cuffs | 2100 | 6# | Bracelets |
 phase cannon | 2000 | 5# | Heavy Weapons |
 cathedra with black opal tracery | 2000 | 20# | Cybernetics |
 cathedra with white opal tracery | 2000 | 20# | Cybernetics |
 cathedra with ruby tracery | 2000 | 20# | Cybernetics |
 cathedra with sapphire tracery | 2000 | 20# | Cybernetics |
 Fist of the Ape God | 2000 | 120# | Cudgels |
 blast cannon | 2000 | 70# | Heavy Weapons |
 spaser rifle | 2000 | 16# | Rifles |
 flawless crysteel shardmail | 1900 | 40# | Armor |
 leyline puppeteers | 1750 | 10# | Gloves |
 black mote | 1666 | 0# | Floating Nearby |
 crystalline halo | 1666 | 5# | Helmets |
 crystalline jile | 1666 | 3# | Short Blades |
 chassis plate | 1600 | 300# | Cloaks |
 Va'am's lens | 1500 | 15# | Shields |
 Dagasha's spur | 1500 | 30# | Hats |
 Kah's loop | 1500 | 1# | Armlets |
 Nacham's ribbon | 1500 | 8# | Cloaks |
 tri-hologram bracelet | 1500 | 1# | Bracelets |
 zetachrome pumps | 1500 | 10# | Footwear |
 zetachrome gloves | 1500 | 10# | Gloves |
 zetachrome apex | 1500 | 8# | Helmets |
 high-energy thermo cask | 1500 | 40# | Armor |
 two-handed zetachrome long sword | 1500 | 8# | Long Blades |
 zetachrome long sword | 1500 | 4# | Long Blades |
 zetachrome halberd | 1500 | 9# | Axes |
 zetachrome battle axe | 1500 | 5# | Axes |
 zetachrome warhammer | 1500 | 9# | Cudgels |
 zetachrome hammer | 1500 | 5# | Cudgels |
 spaser pistol | 1500 | 8# | Pistols |
 light rail | 1500 | 16# | Rifles |
 3D cobblers | 1400 | 5# | Footwear |
 zetachrome dagger | 1390 | 2# | Short Blades |
 high-voltage arc winder | 1250 | 4# | Pistols |
 cloning draught | 1250 | 0.25# | |
 chiral rings | 1250 | 10# | Floating Nearby |
 enigma cone | 1250 | 28# | Armor |
 longreach grappling gun | 1250 | 4# | Pistols |
 phial of brain brine | 1233 | 1# | |
 brain brine | 1233 | 0.25# | |
 nullray pistol | 1200 | 5# | Pistols |
 crysteel shardmail | 1200 | 40# | Armor |
 hand rail | 1050 | 8# | Pistols |
 thermo cask | 1000 | 40# | Armor |
 anti-gravity boots | 1000 | 4# | Footwear |
 warm static | 1000 | 0.25# | |
 neutron flux | 1000 | 2.5# | |
| phial of neutron flux | 1000 | 3.5# | |
 salt kraken corpse | 1000 | 40000# | Corpses |
| great saltback corpse | 1000 | 40000# | Corpses |
 gas tumbler | 1000 | 20# | Equipment |
 di-thermo beam | 1000 | 6# | Pistols |
 chain laser | 1000 | 40# | Heavy Weapons |
 sunslag | 1000 | 0.25# | |
| phial of sunslag | 1000 | 1# | |
 dazzle cheek | 999 | 1# | Masks |
 psychic meridian | 999 | 3# | Helmets |
 palladium mesh tabard | 925 | 9# | Cloaks |
 nano-neuro animator | 900 | 12# | Tools |
 helping hands | 900 | 20# | Backpacks |
 kaleidocera krakows | 900 | 11# | Footwear |
 kaleidocera muffs | 900 | 11# | Gloves |
 night-sight interpolators | 900 | 2# | Eyewear |
 kaleidocera cape | 900 | 11# | Cloaks |
 psychal fleshgun | 900 | 1# | Pistols |
 eigenrifle | 900 | 12# | Rifles |
 gyrocopter backpack | 800 | 10# | Backpacks |
 point-defense drone | 800 | 5# | Floating Nearby |
 nanoweave vest | 795 | 10# | Armor |
 linear cannon | 750 | 40# | Heavy Weapons |
 laser rifle | 750 | 9# | Rifles |
 arc winder | 750 | 4# | Pistols |
 freeze ray | 750 | 28# | Rifles |
 geomagnetic disc | 750 | 1# | Thrown Weapons |
Note for liquids, their base commerce is multiplied by 4 to have an integer weight.
