@PopulationOne-ish asks
seller keeps saying low pop like that settles everything. Does it mean there arent many of that card in existence?
Jeff answers
“Pop” usually means how many copies a particular grading company has recorded at a particular grade. It doesn't count every ungraded copy out there, and the number can grow with more submissions. I ask which company, which grade, and how much demand there actually is. For price, I start with our app's reference and compare actual sales of that exact graded version. A small count by itself doesn't tell me what to pay.
— Jeff, infinitepulls.com