I have purchased many systems, auto-traders, indicators and other trading software from 14 different vendors found in Ninja Trader 3rd party library over the past 3 years. The one vendor I find I keep going back to is Erich’s Indicator Warehouse. I discovered these indicators are useful and affordable. I think my trading tool box I built from Indicator Warehouse has given me the winning edge I needed to be finally successful in this difficult business of trading.