Australian superannuation fees ranged from approximately 0.7 per cent to 2.4 per cent of mean fund size in 2013, with fees averaging around A$726 per year for a member with a balance of $50,000, David Gruen, executive director of the macroeconomic group at Treasury, told delegates at the CEDA State of the Nation 2014 forum yesterday.Gruen questioned the merit of high fee funds for investors, endorsing the view that "on average, high fees are simply a net drain to investors."Low fee super suppliers in Australia may be hard to find.He said that, in 2011, Australia's average superannuation fees were around three times those in the UK."In aggregate, Australians spend around $20 billion annually, or over one per cent of GDP, on superannuation fees," he said."A microeconomic reform that permanently reduced costs across the economy by a few tenths of one per cent of GDP would be considered a significant and worthwhile reform. "Significant reductions in superannuation fees would have widespread benefits for society as a whole," he said.