Interesting, if someone had an EA with all the qualities you described, would he sell it ? I can`t answer for everyone, but I know I wouldn`t. If I were short on money to trade the EA myself, I would search for investors, or take a loan.
The main reason why I wouldn`t sell stuff like this is that I am really concerned, that once you created something effective, and start spreading it (forex wise), the more popular the system gets, then less profit it brings. I have no evidence to provide with this statement, so this is strongly my belief, no need to judge. But still it is interesting whether you will find what you are looking for.