$200!!!! Dream on!!
I will try and not regurgitate the info given above, but basically coming out of the pan you have it run into a catch basin with a float switch and small bilge pump. It is a simple design. THe hardest part is figuring out where you are going to discharge and running the discharge line.
I personally think that getting the water out of the bilge is a must. Not because it will really do any damage down there (this was debated in an old thread about a year ago), but because if you always have a wet bilge, how do you know where the water is coming from??
I have never seen that venturi water drain before... but $200 seems high to me! On a positive side, it would be a lot easier to install. On a negative side, it is one more potential area for failure and expensive.
Here is an idea that would take care of your problem and add a safety measure to your boat. Run the drain hose all the way to the bilge. Go into a shower sump system, like the one here: West Marine: Multiple Port Sump System Product Display
Instead of using a sealed shower sump system (as is popular), open it with holes in the top of the box. Thus: you have a condensation drain AND you have added a big safety measure to your boat. If the main bilge pump fails or becomes overloaded, you have a secondary pump. It wont cost you any more to do it this way, will keep your bilge dry, and will add a safety measure.
PS I am putting a patent on this idea - so don't steal it!! (HAHA)