Some Cards are purposely made to be so costly in the market to make them so rare & hard to get by most. Yes you may have cards that may play & preform better then these sky high priced cards. But the "Pokemon Syndrome" is what SDS feeds off of & relies on with themselves making more money. You guys never heard the term "The House Always Wins"? SDS gets 10% of every sale transaction. So on a 300K-500K card, that's now 30K-50K which is A LOT.
The "Pokemon Syndrome" is the "Gotta Catch Them All" fever. Those who gets a thrill & joy with collecting cards apart from playing with those cards. Many will get cards & keep cards they never will even use them because it completes their collection. It's also like a bragging right or self ego feeling of "Yes, I have this card which most others do not". There always has to be those cards which are the Golden Grail of cards. Cards that gives those in here a huge effort to finally get just to feel great knowing they finally got it.