Sodastream 60L Co2 Exchange Carbonator, Set of 2, Plus $15 Walmart Gift Card with Exchange - Walmart.com
Purchase a SodaStream Spare gas cylinder
SodaStream 60 Litre Spare Gas Cylinder for Sparkling Water Maker, CO2 Cylinder for Making Fizzy Carbonated Water at Home (Screw In Blue Gas, compatible with Spirit, Crystal, One-Touch, Genesis, Power) : Amazon.co.uk:
SodaStream Pink Spare CO2 Cylinder, 60 L. - Walmart.com
Sodastream Terra Bundle With Extra Gas Cylinder : Target