It does seem like it is not super uncommon, so I will make sure to vet this a bit more aggressively and proceed with caution.  

I'm hoping that someone here can offer some advice on a rather uncommon situation.I'm an Aussie passport holder with a non-immigrant b1/b2 US visa, so in simple terms I'm a foreign visitor in the USA.

That's true, it's not uncommon for bidding wars to bring up the price above what it otherwise should have sold for.

in our bigger years in the late 60s and early 70's it was not uncommon for my dad to sell over 1000 lots in a calendar year... buy them at tax sale for 50.00 dollars sell them for 299 cash  or sell them on terms 100 down 50 a month and maybe sell them for 1000.... this has played out in virtually every state west of TExas and florida as you probably aware.Its a fun business but far more to it and buyers are much thiner these days.

Always think of the things that might go wrong and try to find ways to solve them or at least mitigate their impact.Not Having A TeamIn real estate, it is very uncommon, or rare in fact, for one person to be able to handle all facets of the deal.

This is not uncommon from challenged areas in any major city so don't hear anything I am not saying.  

It is not uncommon for investors to look for STR in the summer when booking will be high and then transition to MTR during the winter to lock in a tenant while the STR market picks back up.

In Urban areas it is not uncommon for people to be here on six month tourist visas and they rent homes.  

In my experience it seems uncommon.

It is not uncommon for Realtor "Teams" to have a more senior member of the team to pass on leads to junior members.