What websites to buy cards from?

Hello, I'm new here. I recently just got back into collecting pokemon cards and was just wondering what websites are trust worthy to buy packs.

Troll and Toad and Coolstuffinc are good websites. https://www.trollandtoad.com/
https://www.coolstuffinc.com/

Also most of the vendors who sell through TCGPlayer.com are going to have legitimate cards.

Sellers on eBay and Amazon you'll need to do research on and get more familiar with the cards as a whole before diving in.

I use Troll and Toad for older cards and Ideal808 for newer cards which I buy in bulk most of the time. I used to purchase singles from TCGPlayer, but they've changed their shipping price policy and now it's rather expensive.