A few things... Like others have said, you can duplicate this system for lots less than the quoted price- and a 400 is a much better sized light for something this size. A little clever shopping at ye olde dollar junque shoppe, a hardware store and an aquarium shop and you're home and hosed. If you use a 400 and DIY the rest of it, you should still come in well under $USD200.

This system looks like a water-pumper type aero. Whenever you force nute solutions through a small aperture, for a drip or an aero, the spray/drip apertures require frequent cleaning or they will clog. They may just clog anyway! A filter on the pump intake is highly desirable if not totally necessary.

There's a way around this clogging issue in aero, though. You could flood the tubes to 1-2" and put air stones/bubble curtains in the bottoms of the flooded tubes. The bubbles breaking the surface of the water create a fine, highly oxygenated nute mist without forcing nute sol'n through a nozzle. Still would need a water pump to move nute sol'n up to the PVC pipes in this system.

A simpler way to do it is to eliminate the PVC pipes (and water pump); just use a fairly deep storage tub (~18-24") or rubbish bin, fill 1/4 depth with nute sol'n and put bubble curtains in that. Plants in netpots of clay pellets would sit in appropriately sized holes in the tub lid.