What this is
Same method as the top cohort but on ranks 41-52 per set (cheaper ex/IR cards, more tournament-play exposure than the top chase). Cohorts are not random samples: each set contributes its highest- (or ranks 41-52) priced cards today, so survivors are over-represented in both arms alike.
Where it comes from
Our calculation from other figures in the trainer’s notes.
Show the working
- derived from PriceCharting month-end ungraded sold-price series