Bro, if you have profitable EA, do you think that you will sell it? Sure, you will not if the EA can generate profit from the trade. It is better for you to try making your own EA. Invest some money to coder to create your EA, but 1st you need to have clear strategy or profitable strategy before you ask for coder to code your own EA.
Actually, you also can check on this myfxbook the EA listed on strategies under systems tab. They put their backtest of the EA. At least, you must look he showed more than 4 years with 99% modelling quality. Mostof them linked with live account. So, you can check on that also.
However, from my experienced, i have developed 1 profitable EA. 5 years backtest with modelling quality 99.9% on 1 pair, it shows very good profit, no margin call. Then, I started to run live with the same setting as backtest, yes, it goes well for 1 year only before my account blown.
Just think this one, forex is not easy money for you to become rich. If EA can make you rich, sure, all of us will just stick to use that EA only.