I remember Usagi's house having a few with the 
bunny in them a little while ago.  They show up 
every now and then.  I'm pretty sure they all 
sold by now though.  $150 sounds bout right to.  
I don't think there is any other name you could 
use to look it up.  Except that you might find 
soem hiding under just 'clamp series' or 
misplaced with a different series by clamp.  I've 
seen that happen alot with Clamp in Wonderland 
stuff, etc.