I disagree, it's definitely about the rates. Your sig explains it perfectly: Syringe and Cylinder flooded the market and the price dropped because the items were reintroduced in subsequent OCPs and were no longer the rarest items.
OCPVII was released on 6/8/2017 and Ragial's history goes back to the release date with Mob Scarf. Here's what happened on Chaos:
http://ragi.al/item/iRO-Renewal/Vm8/1
Many of those newer vends are "L/O" zeny-capped vends. I doubt we'll see more than 200 or 300m knocked off average prices from people undercutting, but hey, who knows. I think the iRO market is really interesting to watch and participate in.
okay point taken. let's just wait and see what will happen to it's price during the event's duration and i hope it goes down... my schadenfreude