In such cases, it's worth reaching out to the supplier to get their side of the story before making a final decision. Another way to gather information is by asking for references from the supplier
Even if youre not in it for profit, grading turns a simple card into a keepsake
(You surrender a player match, then they surrender a player match, then same for a ranked match, and you'll both get the trophy) Battle Tested - I created a special section just for this mode, see 6.1 - Battle Pack Mode Master Collector and Master Duelist - Will both be achieved once you've completed every duel and reverse in the campaign in order to unlock all the Duelist Challenges, which you'll have to beat to unlock Master Duelist
However, this ratio can vary depending on your deck's specific strategy
If the opponent does not want this happening, you'll be getting a free card draw instead of a card you can control
There are two main variants of ABC to watch out for: True Draco ABC and Standard ABC