GreatWhip 25 Pcs CO2 Soda Cartridges 8g Seltzer Water Cartridges Soda Chargers Compatible With Soda Siphons is up for auction in Home & Kitchen. The current bid is $4.50, 85% below the $31.00 MSRP, in New/Like New condition. This auction has ended — similar items appear in live auctions regularly.