Right, Scott,
but it's one of their principles: To get an item at lower level, you'd have to pay more. See the L1 Callies...
And, guessing, the Speedblades may be the younger product, triggering an "inflation" option - the newer products are always more expensive. Also, "slow" boosts the price.
Maybe they only forgot to take the Rocketblades away? (Waiting for the announcement ROTFL!)