Buying them now is good indeed because the fact is that the price is okay plus the halving is also coming this year and I think people can become rich by it.
Below $500 can considered as a good price since if all halving desired price will become true, then you are really on the right track on making profits.
Just keep in mind that when buying at any rates, you must know the associated risk so better play along with it rather than considered it as a problem.