Is it possible to buy extra power bricks?

I split my time between 2 cities, and quite often take my drobo fs with me when heading from one to the other.

I would like to be able to just pick up my drobo, put it in a case I have for it and hit the road. I have looked online here in Australia, and even in the online US drobo store and cannot find spare power bricks anywhere. Is it possible to buy them?

It would also be handy to have a couple of spare bricks at work in case one blows - the time it would take to get a new one would be a major annoyance for the business.

Most times it’s possible to purchase such components by phoning support, though most times it also isn’t necessarily cheap.