These are the same blokes I think you'll find Bigfella, as they go under several names. Check the email addresses as I'm pretty sure they match. I know of others that have got 4 kegs from them, but I raised the question with the guys at RCB that four kegs weighs in at pretty damn close to 20kg. The maximum weight of a posted item sent using Australia Post is 20kg. If over this limit you will have to pay a freight/courier cost, as they won't let it go through the postal system. I guess some get in and others don't perhaps-probably depending on the guy/mood he's in at the time the package comes in as to whether he worries about the package being 20kg or just over.
I know when we send packages of things on dry ice out of Tasmania, often when this one particular bloke is working he'll send them back almost routinely because he reckons they don't meet the safety criteria (however they are packed and labelled exactly the same way that they arrived in the state), while other times (esp. if he's not working) the packages go out no worries. Bloody frustrating. Could be a similar deal with the 20kg packages.
Good to hear you got yours ok.
JD