The PokeMMO marketplace the game doesn't have
Sell whole boxes, bulk items at a fixed price, and rare Pokémon with no price caps. Buyers contact you by your in-game name.
1
Sell boxes
List an entire box of Pokémon in one go — impossible on the GTL.
2
Bulk items, fixed price
Move large quantities of items at the price you choose.
3
No price caps
Set any price in Pokéyen, or flag your listing as open to trades.