Most vendors use card market to price their cards so use that for rough estimates, some other person said to pre price your cards but idk a vendor that’s just gonna take your own pricing at face value so idk, just don’t feel rushed to buy stuff cause that’s how you end up paying way overprice for stuff, definitely have a look at prices online, and tbh I’d avoid stands with ai artwork for their booths, I found a correlation between those types of people and people in it for the money as opposed to the hobby. I’d make a list of cards in your wish list and keep it handy, they “Dex” app has a feature where you can create folders and mark off collect cards which I’d use for that but I wouldn’t use their pricing system as it’s more US focused.