Rarest Plarail/Tomy Trains

Even most buyers don't even know the rarity, the auctions on eBay with a low starting price never reached above 40 USD for a boxed Eurostar. Tomica World was not released in the 80s, but in the 90s? Even some 2020 release Plarail are higher in price, which is quite sad. But a thing to remember is that the Eurostar is available in 2 variants of Japanese boxes, which makes it way less rare than a Virgin Train or Silver TGV which was never released in Japan.