Text: His methods also encourage high  The 901s cost $1,400 a pair (some companies make $300 speakers that sound better) because nine cones cost more than two or three; the Wave radio costs $350 because that 7 foot tube was a bear to design.
Entailment: The man's methods promoted high 901s cost, which are $1,400 a pair.
Contradiction: The 901s only cost 3 dollars a pair, quite the bargain.