Is this an error or is this accurate? And if for some reason it is accurate can someone explain why the price is so high?

One of these things is not like the other ones... TCG just reports the median price and that's what this site uses.

Critters Singles Gold Star Seller
Rating: 100% (999 Sales)
Near Mint 1 $0.99
Shipping: Included

Super Chalice Gold Star Seller
Rating: 100% (366 Sales)
Near Mint 20 $0.35
Shipping: $0.85

MTGCardzForYou Gold Star Seller
Rating: 99.8% (561 Sales)
Near Mint 1 $225.00
Shipping: $0.35

Hooray MTG seller pricing typo!