I run my pure water line from the unit to a Brute garbage can with a float valve. Real easy stuff, I promise.
I have overflowed my containers in the past so the $10 float valve can be a great thing. lol
The ebay unit makes about a 5 gallons an hour, the BRS unit makes 2. something gallons an hour on their 75gpd setup. It does depend on your water pressure for quantity, but the 5g an hour is about average.