Paying towards the lower end of the scale indicates a stepping stone job for a younger pilot who will move on as soon as things pick up. Paying towards the upper end should get you a career GA pilot with a reasonable experience level. Offer enough and you could poach someone already employed by another operator in a similar role which should get you an easy approval from CASA.
Location counts as well, easier to get someone if they don’t have to move to Horn Island or rural NT.
Profit share or a decent annual bonus helps to lock someone in.
With the current situation it might be worthwhile looking at laid off airline pilots in their late 50s who probably won’t get back on a flight deck, particularly if they have a GA background or check and training experience.