We've had ours since 2007, paid $65 for it, and love it.  Still works just grand, too!  It's called a Soda Stream too, but doesn't really look like any of those shown here.  I'm not crazy about fizzy water but my DH loves it!

These are pretty spendy but people spend money these days on dumber things, for sure.

https://www.thespruceeats.com/best-soda-makers-4091721?utm_campaign=ROD_food&utm_medium=email&utm_source=cn_nl&utm_content=18792678&utm_term=