Bonus Ballz offers HPA and CO2 refills at the following prices:
HPA (up to 4500psi) - $3.00
9-12oz CO2 - $3.00
16-20oz CO2 - $4.00

Bonus Ballz Paintball Shop carries Air and CO2 tanks from the following Manufacturers. Please call for availability.
Crossfire Draxxus Paintball Invert
Ninja PMI Pure Energy