unji or unsho

Anyone know why the prices on these have been cut in half?

Enemy VIT: 60 Enemy DEF: 420 FUDO+SENJUINRIKIO / UNJI+UNSHO STR: 109 / 114 DEX: 107 / 114 ATK: 423 / 425 ATK w/Berserk: 528 / 531 FUDO+SENJUINRIKIO / UNJI+UNSHO WSC: 53.12 / 56.44 fSTR: 12 / 11 PDIF: 1.00 / 1.01 PDIF w/Berserk: 1.25 / 1.26 fTP: 1.0 / 1.0 FUDO+SENJUINRIKIO Formula's ((39 + 12...