This is a continues question until the ETH reached the said amount(though i doubt it will happen in the next 2 years more)
500$ maybe possible if the price of Bitcoin starts to rally again to at least 15k$ .
You are right. $ 500 looks more reasonable. don't expect too much. buy now and hope a pretty good increase. no need to be greedy with too high hopes. It is not impossible, but tips must look at market conditions with the current reality.