Newman ¥500 drafters; the prices are astronomical now because the entire collecting community loses its sh*t when a drafting piece shows up with metal grip and colored resin barrel.
In addition, Newman has experienced a major glow-up since 2022 thanks to the tweeter @drifand mentioned above; pretty much every significant Newman piece has experienced dramatic inflation in that time.
These ¥500 drafters have always been rare on secondary markets—I didn’t see a single one until late 2022 (and I was buying throughout 2021 and 2022). But with Newman’s glow-up, we started to see some of these on YAJ and Mercari. Almost instantly, the price floor was set at about ¥12,000. The price has only gone up since then, but people are still reluctant to pay over ¥20,000 for a non-stickered piece.
I saw a black piece go for like ¥13,000 in early 2023, but every other piece I’ve seen has garnered a much higher price. Expect to pay through the nose for a stickered red or blue one.