I read about this story in the Fairfax newspapers:
Briefly, family inherits vase from antique dealer aunt (surely a clue as to potential value?). Family uses vase as door stop. Family decides to get rid of vase at a boot sale but has change of mind and gets it valued first. Vase turns out to be chinese antique from the kiln of the Imperial court. Vase goes to auction. Vase sells for 650K GBP ($1.2 million AU). Family lives happily ever after.
I shall be visiting some boot sales when I go to Exeter later this month.