Thread:KrytenKoro/@comment-45662739-20200502022010/@comment-31365078-20200503053146

you could ask on

https://old.reddit.com/r/digimon/

or

https://withthewill.net/forums/digimon-sales-trading.13/

though in regards to with the will, youll need to have 35 posts before you can buy and sell cards.