Don't listen to him. This is definitely a $20 - $25 dollar deck.
Remember kids; pricing is different on every website! It all depends on what kind of
supply they have and what kind of demand they're receiving. Notice how almost every online store charges an extra 10 or 15 bucks for the White 2014 Commander deck as opposed to the other colours? That normally has no relevance here, but it's a good example of prices being raised based on
supply and demand.
The two websites I use for ordering singles (kanatacg/Wizard's Tower and FaceToFace Games) have Kulrath Knights priced fairly cheap. $1.50, or $3 - $4 for a foil.
I calculated the cost to make it just now, and it came out to $20.40 on FaceToFace, and $24.04 on Wizard's Tower. This is in CAD, so the exchange rate to USD is not so severe as to be raised to the amount you've stated.
@JungleMania: Check more than one website my friend. Your seems to charge ludicrous amounts.