Advice on Purchasing Aboriginal Art

You go the day after pension day
Few old gins sitting down on the beach
Out past Yirkalla
Stupid buggers have got no idea
All cashed up like Thursday millionaires
Black fucken Christmas mate
Sell it for five fucken bucks
But don't go before pension day
They'll Jew ya for fifty
Bought a goanna
And a didgeridoo
All just fucken dots to me mate
But you never know hey?