what is the most expensive pokemon card in obsidian flames

what is the most expensive pokemon card in obsidian flames top 12 prices not impressive.... But sealed Obsidian Flames goes for a ton of money .... Does this make sense? Thoughts? Are pokemon card singles Obsidian Flames Top 10 Cards:

Name: what is the most expensive pokemon card in obsidian flames top 12 prices not impressive.... But sealed Obsidian Flames goes for a ton of money .... Does this make sense? Thoughts? Are pokemon card singles Obsidian Flames Top 10 Cards:
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SKU: 76067371702
Price: 28.51 USD
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SKU: 76067371702

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We are based out of Minnesota and attend most major MTG conventions

We might be able to pair this with Klefki to slow down our opponent during the early game and start using Banette ex as soon as we can Evolve

Unlike a regular Holographic Rare, a Reverse Holo will leave the actual card image free from holo, instead making the outer contents holographic (hence the term Reverse Holo)

You might take away their fourth land or their preferred three drop but that won't actually do anything for two or three turns which greatly reduces the value of Blackmail being one mana