natural trading limit 25k for leading stock, 7.5 for non-leading stocks,,ways to increase your trading limit:
1. open up comsec cash account
2.chess holding increase you trading limit
3. Bpay funds into your trading account.
minimum order size of a particular stock is $500 if you buy it for the first time, if you already have chess holidng in that company, there is no minimum order size for future trades in that particularcompany