Compare: Usopp's Rubber Band of Doom!!!

attested · seq=#216

Same name, different sleeves. Signal compares each row against the reference printing's recent market price.

By printing

signal vs primary
PrintingMarketListed midDealer buy
Normalprimary
$0.17
—
—

Signal compares each observation against the primary printing's recent market price.

Same name across sets

SetPrimary printingMarketSignal vs reference
Usopp's Rubber Band of Doom!!!Pillars of Strength Pre-Release CardsNormal$6.54+3747%

Reference: Pillars of Strength · Normal $0.17.