[DixieBaseball]

To answer your question, I find the pop reports to be very beneficial with scarce issues, and especially rare cards. I keep a pretty detailed list of T213-1 Type 1 Coupons. The Pop reports have been very helpful over the last 10+ years I have been able to snare a few that are re-graded, but with so few in the hobby, it's not a big chore to keep up with... So yes, I find them beneficial for certain issues, like Coupon Type 1's or even T210 Type 8's & 3's to give you a few examples.