PerfectPokemon.com is a competitive Pokemon Scarlet/Violet Community. Buy/Sell/Trade battleready Pokemon in the Marketplace. Compete and earn badges in the online Gym Challenge or simply meet and mingle with other friendly Pokemon Fans.
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http://3ds-sp.pokemon-gl.com
This is the official pokemon game site. Create an account, and sync it with your game online. After that there will be a store where you can buy most rare items with the currency you have earned through ever step you have taken in the game. I buy 99 pp ups all the time, its easy and free.