When you reach the indicated level you will unlock the corresponding card for the listed price.

Barrage (Star):
Level required: 24
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Bowcaster (Star):
Level required: 32
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Cooling Cell (Charged Star):
Level required: 7
Initial price: 2,200 credits
Upgrade price: 9,000 credits

Cycler Rifle (Star):
Level required: 28
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Explosive Shot (Charged Star):
Level required: 18
Initial price: 2,200 credits
Upgrade price: 9,000 credits

Flash Grenade (Star):
Level required: 20
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Focus Fire (Charged Star):
Level required: 7
Initial price: 2,200 credits
Upgrade price: 9,000 credits

Homing Shot (Star):
Level required: 11
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Impact Grenade (Star):
Level required: 6
Initial price: 2,200 credits
Upgrade price: 7,000 credits

Ion Grenade (Star):
Level required: 4
Initial price: 600 credits
Upgrade price: 7,000 credits

Ion Shot (Charged Star):
Level required: 7
Initial price: 2,200 credits
Upgrade price: 7,000 credits

Ion Torpedo (Star):
Level required: 9
Initial price: 3,000 credits
Upgrade price: 7,000 credits

Jump Pack (Star):
Level required: 16
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Personal Shield (Charged Star):
Initial price: 2,200 credits
Upgrade price: 9,000 credits

Pulse Cannon (Star):
Level required: 6
Initial price: 2,200 credits
Upgrade price: 7,000 credits

Scan Pulse (Charged Star):
Level required: 13
Initial price: 2,200 credits
Upgrade price: 9,000 credits

Scout Pistol (Star):
Level required: 4
Initial price: 600 credits
Upgrade price: 7,000 credits

Smoke Grenade (Star):
Level required: 13
Initial price: 4,000 credits
Upgrade price: 7,000 credits

Thermal Detonator (Star):
Level required: 2
Initial price: 100 credits
Upgrade price: 7,000 credits