VERY EXPENSIVE BITS OF TINThe prices paid for rare number plates continue to amaze. At Bonhams & Goodman's Collectors' Cars auction last month, the "right to display" NSW 6 sold for an undisclosed amount, said to be close to the $1 million estimate. The result has unofficially broken the record of $680,000 set when Bonhams sold NSW 2 in 2003. Robert Glover from Bonhams said that since the RTA released several single digit plates in 1983, their value has risen by about 40 per cent annually.NOT SO SUPERNew research by the Association of Superannuation Funds of Australia says that many self-employed Australians have little or no super. About 28 per cent of the self-employed sector has no super. A further 53 per cent has balances of less than $40,000. The average annual income of the recently retired self-employed is $24,500, not enough for a comfortable retirement.FRESH FROM THE MINTOn Monday, the Royal Australian Mint issued a limited-edition Sir Donald Bradman coin to celebrate the centenary of his birth on August 27, 1908. The $5 silver coin is legal tender but don't use it as small change: it costs $18.75 to buy from a coin dealer, plus postage. The Perth Mint also celebrates sporting history with a silver coin marking the 25th anniversary of Australia's 1983 America's Cup victory. The $95 price includes a piece of the Australia II headsail.HOME, JAMESConspicuous consumption is nothing new. In 1938 Melbourne's City Motor Service promoted a Rolls-Royce hire car service, complete with uniformed chauffeur. A trip to Marysville cost 36 shillings a person.