Heliringer,
It might look like a Bell 47 but what you have seen in the tourist industry up north is probably a Kawasaki. Think about the business model. One pilot one pax doesn't work too well. Cram in two pax and you may get figures in the black at the end of the month.
The problem with the Kawas is that the design concept came out of Kawasaki Japan, where at that time most Japanese were 60 kilos with a 34 inch hip measurement. (Sorry to mix the units here...) When you get the 2005 average Mr and Mrs Australia turning up for a flight, you find a 90 kilo big man and a sheila not far off. Even if you get off the ground, they will still grizzle at the space and tell their friends to avoid you.
R44 may work in areas of lower density altitudes, with half fuel you should be able to carry three big pax. (This is why tour operators like to employ 55 kilo pilots...)
That said there are still operators of the Kawas in NT, and if you are good with a grease gun and a sunny personality it might make an interesting change from mustering.
FWIW