$500 is a very high price, I'm pessimistic this year can be achieved. Monero might be good at the moment but the market still doesn't have the power to try to rise. so it's impossible that this can become a reality..
Actually it can happen quite easy , if btc will bypass over 20k USD then monero can do easy 500$ aswell , same goes for other tokens/coins . Im hoping eth will go back to 1.2K in future and even more . Can you imagine ETH being at 5k USD range ? Seems unreal , like it was when eth was at 10$ range =]