A population report, or pop report, is a count of how many copies of a specific card a grading company has encapsulated at each grade. Collectors use it to understand relative scarcity of high grades, not to invent a guaranteed market price. Before submitting, talk with a local grading submission shop about whether the card’s grade distribution and demand make submission worthwhile. A low pop at a high grade can matter, but a low pop on a card nobody wants still leaves a slow sale.
Read pop numbers carefully. Different graders keep separate populations, labels and variations can split counts, and a rising pop can change the story after a large submission wave. The how to read a pop report guide and is grading worth it guide explain common misreads. Use the report as one input beside condition, recent sales, fees, and turnaround time. If a shop cites population as the only reason to grade, ask for comps that show buyers actually paying for that scarcity.