[mrreality68]

I say watch how the particular card is trending and buy when you feel is appropriate.
Some maybe trending up now and some down now.
Like stocks you cannot always try and predict the value at any moment in time.
Buying as you go both high and low will give you a cost average of your net investment if you are investing.
If you are collecting as a Collector then buying vintage anytime is good because over time it will go up and over longer time it will go even more.
Regardless of what anyone of us says the reality is

If you see a card you like and it is in your budget then buy it and enjoy it