How do I trade my Pokémon cards?

Your best bet is to turn to specialized platforms, such as Pokéchange (a great French site) or Cardmarket (arguably the international market leader). To help you estimate the value of your Pokémon cards, you can use Pokecardex, a veritable treasure trove of information.

Please note: Just like when you return a Loom garment, we ask that you take great care when sending your Pokémon cards back through the mail! Pack them securely in a sealed bag, and slip a small piece of stiff cardboard into the envelope to keep it from bending. If a card arrives damaged, the recipient is likely to be extremely disappointed—and frankly, we can understand why.

And now, swap them all! (la la la).