Some people tell me that my Pokemon EX will be worth more one day! (like Mewtwo, Entei, Zekrom, and white/black Kyurem) Should I sell them now or wait longer to sell them?
I'm a TCG guy. No harm done here Jofly :D
So anyway you can actually sell a perfect condition card for about 15$/£20. Depends on currency here. If it's something desired by player's decks such as Reshiram/Ho-oh EX you can sell it for way more than what Jofly said. Go on Amazon and search a card. Look at the prices. That's the range :3 I've sold a Ho-oh EX to a sucker for £34 once :P
I think people will pay more for it when it's old, but it has to be very old. If you sell it now you will get like 10$ for it. I saw some old Ex cards that people sold for 10$. You could sell them now if you have a great collection. If you collect all card in a whole expansion you Mightsell it for much money.
Source(s) Experience and Ebay .3.