sealed mtg booster box (24ct) Double Masters (2XM) — Twenty Sided As powerful dragonstorms spiral Tarkir into chaos and wild dragons darken the skies MTG Collector Booster Box Acrylic

As much as I like the cards and concepts here, it is below average for Commander

If truly sealed ones could be found, those would surely top this list with ease

At under $60, this card will go down as one of the biggest bargains in the set, though it's hard to say how much more expensive it will be in English, due to the lack of Diancie cards to compare this SAR to

To answer your first point, there was no set design of the cards as late as 15th September 96, the artwork to Bulbasaur is different, white borders etc

While there isn't the same variety of high-priced cards in this set, the chase card commands about $240 in value the most expensive chase card thus far