@ChecklistChikorita asks
I thought I finished a set and my buddy says I need all the reverse holos too. Who made these rules 😭
Jeff answers
Collectors often use “master set” to mean every card plus its available variants, but people disagree about whether related promos, stamps, and exclusives belong. Before buying more, choose a checklist and define your finish line. If you're selling a completed set, spell out exactly what's included. For your own binder, you're allowed to celebrate the collection you intended to build. Your buddy doesn't get to keep moving the goalposts.
— Jeff, infinitepulls.com