@dalias How much do the normal cylinder refills cost in the US? The 425g ones go for something like 5-6€ here in DE. And given the patent for the screw-able is expired, every store has it in their own brand, not paying Sodastream a dime. (Yes, 13€/kg is not $20/2.3kg, but still not too bad, IMHO)
Or is that the (proprietary, still patented) click system you run?