All prices listed are buying prices.  Selling prices are half of these values, rounded up.

Bullet Weapons
.50 MG:  3

Machine Gun: 8

Assault Rifle: 8

Gatling Cannon: 22

Sniper Rifle: 30

Shotgun: 22

Cannon Weapons
Autocannon: 22

Small Cannon: 14

Medium Cannon: 22

Large Cannon: 27

Bazooka: 15

Sniper Cannon: 30

Grenade Launcher: 15

Burst-Cannon: 37

Rocket/Missile Weapons
Small Rocket Pod: 9

Medium Rocket Pod: 15

Large Rocket Pod: 21

Micro Missile Launcher: 5

Small Missile Launcher: 11

Medium Missile Launcher: 16

Large Missile Launcher: 22

Medium Vertical Missile Launcher: 18

Large Vertical Missile Launcher: 24

American
Laser Rifle: 60

Small Laser: 20

Medium Laser: 32

Extended Range Laser: 52

Small Plasma Cannon: 60

Medium Plasma Cannon: 80

Large Plasma Cannon: 104

Energy Sniper Cannon: 80

Side Boosters: 66

Forward Boosters: 56

Fusion Reactor: 400

Power Amp: 150

Ammo

HE Rockets: 50

LR Rockets: 40

Aerodynamic Shells: 50

External Magazine: 30

Electronics

External Radar: 9

Japanese Radar: 22

Area Jammer: 20

Advanced Targeting System: 30

Artillery Aiming System: 16

Sniper Targeting Computer: 15

Missile Fire Control System: 12

ECM: 8

JECM: 30

Special

Parry Blade: 15

Anti-Missile System: 6

Anti-Missile System MK2: 18

Artillery Cannon: 115

Artillery Burst-Cannon: 150

Tactical Support Missiles: 105

Upgrade Kit: 110

Improved Actuators: 20

 

UEG
Light
Hermes: 100

Blitzkrieg: 200

Medium
Vanguard: 200

Artemis: 260

Heavy
Ares: 380

Assault
Hephaestus: 400

Hecatonchires: 440

Australia
Light
Sunburst:200

Japan
Light
Samurai: 180

Medium
Shinigami: 200

Shurikan: 300

Assault
Shogun: 400

America
Light
Marine: 1200

Gust: 1200

Medium
Lightning: 1600

Heavy
Typhoon: 2000

Firestorm: 1840

Assault
Volcano: 4200

Guan Yu
Avalanche: 2000

Egypt
Anubis: 250

Tiger
Tempest: 220

Africa
Medium
Lion: 400

Assault
Rhino: 600