PSA 8+ first edition base set

https://preview.redd.it/g3zk5tye654c1.jpg?width=1000&format=pjpg&auto=webp&s=d0d38e70a9550a082f9999e76bc1f29b3b92fdcd

Hello all! I'm working on getting a complete collection of PSA 8+ graded first edition base set Pokemon cards (the original 102). I understand this will be a pretty pricey endeavor but I was wondering if anyone had any tips or tricks when it comes to this set?

Where are the best places to source these cards, are there any rarer print types of specific cards (other than the red cheeks Pikachu), and is this even a good time to buy? Are prices high or low compared to the historical averages?