For just $ 1 you can trade. There is no minimum amount, the more funds the better and the greater the risk of loss. That is if you have large funds to trade, so be careful when buying coins that are not potentially future. That will result in you losing a lot of funds.
what OP mean is what coin they can buy with money just $500 not want your adivse to start trading with laverage, that's a risk for newcomer and want to invest money in crypto to start trading with laverage without know any information