i emailed the shipping costs. it's basically $30.50 per unit since we have over three units. It was going to be 57 per unit if you ordered on your own. Anyway if you are ordering I need to know VIA GMAIL:
1> 1w or 3w leds?
  
 2> spectrum ratio,  blue:white=2:1/1:1/1:2?
  
  3> just timer inside, no dimmable?
  
 4> timer and dimmer inside?  like your requirement, you can setup  any brightness rate in different time range set by yourself.
  
 5> simulate the moonlight, fixed cycle model?
  
 6> any other requirement?