Hi aversano,
Welcome to T2W.
Well, I don't know of any either, but obviously there will be some. Quite a lot in fact. That said, you've set the bar pretty high at $300k, so it's unlikely that there will be many retail traders here (who comprise the majority of T2W's membership) who achieve this target. And, of any that do - how would the rest of us know? British reserve and occasional good taste preclude most us from boasting about such things and, anyone who does, is likely to be greeted with suspicion at best and, at worst, be accused of lying or trying to scam the membership etc.
Anyway, the issue of $300k is not really relevant, IMO. Anyone who has an edge that enables them to produce consistent profits has the potential to earn this kind of money - and more - if they have sufficient capital. There are probably quite a few traders with $60k capital who consistently produce returns of, say 50%, i.e. $30k p/a. Not so many of them have $600k capital, enabling them to generate an income of $300k p/a. To achieve the latter target, traders with only $60k will either have to improve their trading results or reduce their annual income in order that they can grow their capital base to $600k. Even if they can do either or both of these things, it could take many, many years for them to build their account to this level. My guess is that both options are between the devil and the deep blue sea and are every bit as tough as coming up with a consistently profitable strategy in the first place.
Tim.