Card Condition

        Condition is very important to the rarity of a card. For example, a 1st edition base set Charizard in good condition may be worth $70, while a bad condition one might be worth $15. (These aren't actual prices, this is just an example.) There are different common condition quirks: peeling, scratching, bending/creasing, miscoloring, ripping and curling. These effects can make your cards less rare and valuble, so inspect all of your cards.  Make sure you look at it in a light climate so you can see any scratches. Also, make sure to check any card you want to trade/buy before getting it. (TIP: if you have any really rare good condition cards, you will probably want to put them in hard plastic cases for safekeeping. Curling most commonly happens to holo cards, so those are the ones you'll want to put in hard plastic cases first, as it stops the curling.)

Great condition card ("Mint condition")

Bad condition card