It was banned in Standard barely a month after is was released
Seven might be a stretch, especially against more aggressive decks
That said, the same data carries a warning that most of that money is spread across modest, repeatable sales, not headline-grabbing sales
Here are the most popular alternate commanders from these lists (according to EDHREC): Zaxara, the Exemplary (Enhanced Evolution) Xyris, the Writhing Storm (Arcane Maelstrom) Haldan, Avid Arcanist // Pako, Arcane Retriever (Arcane Maelstrom) Several of the other new cards show up in more niche strategies, though these are the most impactful from Commander 2020
29 of the deck's 31 creatures are humans, so Eowyn's ability is easy to trigger, and even drawing the card isn't too hard
English cards are rare and often significantly more expensive, so it is worth embracing the local versions