It's nice to see the prices of LED fixtures getting to the point that people are investing in them. Unfortunately, it is a chip; therefore, it will (and is already) a commodity. As economies of scale increase, prices will go down. The cool thing about LED's is that they are progressing faster than Moores Law (where micro processors double in transistor density every 18 months) In 1-2 years, the LED aquarium lighting will cost 50%-75% what it does now and will be 30%-50% brighter while using 10-15% less wattage.
It's a win/win situation for everyone. In 5 years, nobody will be buying anything but LED's except for the largest and deepest tanks. They are still a single point light source and require good optics to disburse the light.