I'm also looking for missing Dex Pokémon, as well as missing promos!
If you would like us to become trade partners, please let me know which Pokémon you want me to reserve for you and which you'll be reserving for me!
My trade boxes:
Kanto | Johto | Hoenn |Special/Promo
1 normal Dex Pokémon = 1 normal Dex Pokémon
1 Evolution = 2 normal Dex Pokémon
1 baby Pokémon = 2 normal Dex Pokémon
1 Promo = 1 Promo or several normal Dex Pokémon (feel free to make an offer)
Happy trading <3