@ReprintRookie asks
all my pricier cards are of one pokemon. Does owning different cards spread the risk much?
Jeff answers
Different cards may still depend on overlapping demand. I'd think about how concentrated the collection is before calling it diversified. Our app can help you understand the individual references, but separate listings don't guarantee independent price behavior. Collecting one favorite is fine; just recognize the financial concentration if resale matters.
— Jeff, infinitepulls.com