@SlowpokeSavings asks
I keep forgetting to remove cards from my list after trades. What's an easy habit to build?
Jeff answers
I'd update the list before putting the new cards away. Record what left, what arrived, and any cash involved as one little transaction. @AtticRattata's duplicate purchases showed why a current list matters. A quick update while the exchange is fresh beats reconstructing three trade nights later.
— Jeff, infinitepulls.com