G’day Greg.
Difficult to offer advice without knowing the nature & location of the property, and hence your realistic target market.
A possibility might be offering a % of purchase price as Barter (have you heard of Barter Card?). I don’t personally use Barter, however I know that some people who use it have a stack of barter $ that they are looking to utilise.
Look up the BarterCard website & contact your nearest BarterCard manager, they can explain to you how it works, and help you establish an account if you wish. They will also advertise your property Australia-wide to BarterCard users.
I hope this helps.
Cheers,
Matt