The 3 or 4 plus 40 foot containers that Bruce and Joe have organised are seafreight and not airfreight ofcourse. There will be 40 plus machines per sea container.
 To send a machine by airfreight is around $1000.  If u got the worlds best deal, as low as $800 to $900.  Seafreight rates get down to around to $300 to $400 a machine incl landing etc.
   It never pays to send that many machines ever by air-freight.  Machines are only airfreighted when people want the machines yesterday, versus in 5 or 6 weeks, but it adds to the purchase price, hence the AC/DC Pro is $5950 and not the standard $6350.  The $400 saving is only because of the seafreight rates etc.

69 in a 40ft and 33 fit in a 20ft container,they are packed in tight,I will take a pic to let you see when our container gets here and your costs are just about spot on