How much do chaotic cards cost?

some boosters cost arround 3 dollars and starter decks are usually arround 10 but if you want cheap good cards go to eBay they have alot of cheap highly difficult cards to find like ursis for arround 20 dollars or blazvatan for 11 dollars usually just examples (also they don't include the shipping price in with the price of the item so look at the cost before you buy it)