Spectrapure has refurbished units if you check their site you might find one cheap enough.
Make sure you get one that deals w/ chloramines, has a chloramine block.
Most RO/DI units will have a bypass so you can get just RO for drinking
Check used section here as well, I've seen a couple decent units.
There's a fine line between owning your tank, and having your tank own you!_________________________________________
120G SCA starfire, tunze 1073.02 return pump, Geisemann reflexx 4xT5, 2x panorama pro LED strips, 2x Vortech MP 20's, 40g sump w/ fuge.