The key lies in older, rarer, out-of-print cards you wont find in bulk on eBay and gem mint cards worthy of a display case
The idea of Absol's horn resembling a blade also tied into the pokemon with blades concept, making it a powerful companion for a skilled assassin like Thirteen
To assist you in establishing a price, look at the averages for comparable cards sold on the site Card Market
Miscuts Miscuts are a fact of life in any industry that deals with paper, cardboard, or, quite frankly, anything with a pattern
Strong enter the battlefield effect A good portion of playable creatures in commander have a strong enter the battlefield effect
therefore a proxy of a 1st Edition Charizard for $4 interferes with Nintendos ability to sell authentic 1st Edition Charizards in literally NO WAY because Nintendo will never sell a 1st Edition Charizard ever again its hard to determine if proxies strengthen or dilute the perception of the game but it might be argued that its a positive consequence of the actual high value the cards hold on the secondary market So because proxies serve a niche, and many proxies are of cards that the original game producers will NEVER reproduce ever again, the fact that it uses authentic artwork might not be enough for the original game producers to jump into action
