Not saying that it's not a good place to buy from, but looking at it the '"Deals" seem on the expensive side, for example, Garmin Montana, special price $999, I got one several months ago for $800 from PB Tech, heard of other who have got it for as low as $650.
The Colorado, a now discontinuted model, since 2009 selling for $799.
I would steer clear, plently of NZ based stores on-line and physical selling for much cheaper
The garmin nuvi 2595 deal for $269 with nth America and Europe maps is what they are interested in. I think the cheapest just for the unit I've seen is around $220. I'm in chch, so can't pay them a visit. Will probably steer clear as it seems to good to be true unless someone has bought from them before.