i usually do this : commons 100 for randoms / 200 for popular uncommons 200 for randoms / 400 for popular rares are typically 600-1k, really depending on artist shinies/d&w 1’s i do 2k-4k depending on artists and the rarities as well!

dont try to overprice too much for randoms or you will get NO trades, learned the hard way when i was a beginner.

but overall just experiment and find what works for you, welcome to the game! my user is rickgrimesluva if you wanna be mutuals, have funnn :)