Tradingpost has 0 cars for sale between $20,000 and $30,000 in Shelley, WA. As Australia's favourite way to buy and sell for over 50 years, Tradingpost is the trusted way to sell your current car, and find your next car at a great price! Whether looking to buy or sell a car, ute, SUV, or van, always be sure to check out the wide range listed on Tradingpost!