Silly RO/DI question

[fortheloveofcrabs]

This is what I gathered - *any* (properly working, ect ect ect) RO/DI unit will bring water down to 0-2ppm... So if this for $120 does it, why do people buy the ones for $275? Am I missing something here? Why would people pay more than twice as much for the same thing? Why does J&L sell ANY ro/di devices - if it's so much more money? This is one of those things that just seems too good to be true. I've been wanting a water cleaner for a while but had a hard time swollowing the $275 price tag - but $120 is no biggie (+ the crazy $40 shipping).