Hi,
Recently, I purchased an Aquafx 100GPD 4 stage RO/DI at
www.aquariumpros.ca . I am happy with the unit, but it was backordered for a month. They have a sale on it for the past couple of months - $269; however, the sale will end soon.
The total came to around $330 including shipping, and taxes.
Hope that helps.
- Victor.