June:
Riftcinder - 800k/1 (160)
Riftdross - 400K/1 (94)
Pluton - 300k/99 (172)
Beitetsu - 920k/99 (73)
Riftborn Boulder - 700k/99 (183)
Heavy Metal Plates - 7,900k/99 (80)
High Purity Bayld - 780k/99 (97)
Alexandrite - 820k/99 (167)
M. Silver - 375k/1 (103)
L. Jadeshell - 400k/1 (99)
100 Byne Bill - 370k/1 (83)
S. Astral Detritus - 27,000k/99 (111)
November:
Riftcinder - 550k/1 (154)
Riftdross - 300K/1 (94)
Pluton - 180k/99 (76)
Beitetsu - 650k/99 (90)
Riftborn Boulder - 300k/99 (112)
Heavy Metal Plates - 5,900k/99 (144)
High Purity Bayld - 460k/99 (193)
Alexandrite - 400k/99 (280)
M. Silver - 220k/1 (102)
L. Jadeshell - 210k/1 (63)
100 Byne Bill - 200k/1 (29)
S. Astral Detritus - 15,700k/99 (37)
I'd say it's not surprising that su5/necks have came down 30-50% considering basically everything has.