Support Systems
Upgrades
Space Upgrade
$5,000. This allows you to be in space, but you need thrusters to move in space. You don't need this if you are staying in a transport.
Underwater Upgrade 3,000. This allows you to be underwater. Being underwater decreases your speed in 1/2. You don't need this if you are staying in a transport.

Thrusters
Thruster Upgrade $500 Speed: 5,000. This allows you to move in space, and a faster speed.
Thruster Upgrade 2 $1,000 Speed: 10,000
Thruster Upgrade 3 $10,000 Speed: 100,000,
Thruster Upgrade 4 $50,000 Speed: 500,000
Thruster Upgrade 5 $150,000  Speed: 750,000.
Thruster Upgrade 6 $250,000 Speed: 1,000,000.

Other
Balout System $2,000 Defense: 100,000. This allows your mobile suit to travel through the atmosphere once. Cannot fight while this is on. Cannot be used as a shield.
Armory