I have not looked at pop reports nor cardtarget and vcp, but by looking at the research others have done in this thread it goes to show that POP reports mean absolutely nothing compared to frequency of sale. I really think that POP reports now mean nothing when not also looking at frequency of sales with VCP and cardtarget doing a decent job tracking public sales (it does miss lots and they don't cover every auction site).
POP reports and past sale trackers both have faults but when you use the two together you get a better idea of the full picture.
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