I think the key is being able to offer ongoing training and support as well as the unit. I am in the process of completing Prism training and Luke over here in Perth is the only instructor outside North America, but he isn't qualified to take trimix, so if I want to get trimix certified on the prism I have to take a small trip around the world which becomes a bit pricey.
Selling the units is one thing, but maintaining an ongoing relationship with the client is the key to growing any market IMHO.
But by all means come to OZ
we have some great diving and even if you don't sell a unit it will be a fun way to get a tax write-off!