Exactly the price of bitcoin will continue to rise over a period of time, so if you want to buy some coins then you should buy it now, as this is the best price to buy.
Everything below $500 is a reasonable price to give some shot to buy bitcoin. $500 price is really not fitted to the halving if all speculations will become true. So expect some above $500 price once the halving result will established.
Halving will surely take us to the price of $500 and majority of people will sell at that price to earn some profits and I think that is the right thing to do.
I see no bullish performance once $500 has been touched while halving approaches. Look reaching $500 today is different from $500 last November 2015 where road to $500 takes only days to reached. Here we can see some support from at least $10 to $20 difference to a close price in $500. Where down for weeks when price reacehd $410 , $420 , $430 , $440 , $450...
Now its time to achieve that milestone very soon, price is moving in positive direction so we would be able to see this price very soon.