Two acts on this page actually live in Mount Isa: a singer and a karaoke host. The third name is at Longreach, and then the list crosses the border to Alice Springs before coming back through Ravenshoe and Mareeba. Those are not travel distances, they're road trips of several days. There is no way to write this page politely and still be honest: if you want somebody local, it's a very short list.
That doesn't make the rest of the list useless, it just changes how you use it. Acts do come to the Isa, usually flying in for a mine social club night, a rodeo weekend or a wedding where the couple has decided the music matters more than the cost of the flights. The mix within reach is mostly singers, wedding singers and acoustic duos, with a duo and an acrobat out of Alice Springs. A fly-in act needs a flight, a room and their gear either freighted or hired at this end, and the sensible ones will tell you which before you ask.
Top picks are the nearby performers with the most visible reviews, then rating, then the closest; further afield the closest come first, and premium listings break remaining ties. Distances are straight-line from Mount Isa. Ask each act whether they travel to your venue and what that costs.
A couple, and you'll see them at the very top of the list with no distance against their names. For a birthday, a club night or a small wedding they'll be the easiest and cheapest thing you can book. Past that pair, everything on this page involves a serious trip.
There isn't a single answer, because the fee splits into the performance and everything else: airfares, a night or two of accommodation, gear freight or local hire, and sometimes a second person to run sound. Ask for those as separate lines in the written quote. The from-prices on this page cover the act, not the journey.
Some will, but site access is the thing to sort first, not last. Inductions, transport on and off site and what time the bar closes all shape what an act can do. Tell them it's a camp or a site job in the first message so they can answer properly.
Freighting a PA to Mount Isa costs more than the act sometimes. A singer who can work with backline hired locally will come in a lot cheaper than one who ships everything.
If an act is already coming for a mine social club or a rodeo weekend, a second job on the same trip splits the airfare. Ask whether anything else has them in town on your date.
One flight a day in or out changes what's possible. Settle the arrival and departure before you agree the finish time, or you'll be cutting the last bracket short.